The Best Gua Sha Tool Is Not the One TikTok Sold You. Here's How to Pick.

The gua sha market in the United States has a peculiar problem: the cheapest tools look almost identical to the expensive ones in a photograph, and the marketing language is nearly interchangeable. A $9 jade stone from a third-party Amazon seller and a $129 nephrite jade tool designed by a licensed acupuncturist both promise “sculpting,” “lymphatic drainage,” and a “snatched jawline.” One of them will chip within six months. The other might outlast your phone.

This guide exists because the search results are crowded with affiliate lists that rank tools by commission rate, not by whether the material holds up or the return policy protects you when the stone arrives with a hairline crack. The best gua sha tool is not a universal object. It depends on your skin type, your patience for maintenance, and whether you want a five-minute morning de-puff or a ten-minute clinical ritual. What follows is a breakdown of the US market by material, price tier, and the fine print that usually stays buried.

What a Gua Sha Tool Actually Does (and What It Doesn't)

Gua sha is a traditional East Asian technique that involves scraping or sweeping a smooth-edged tool across lubricated skin. The modern facial version is gentler than the body version practiced in physical therapy settings, but the physiological rationale is the same: directional manual pressure moves interstitial fluid toward lymphatic drainage pathways, and the mechanical manipulation temporarily relaxes facial muscle tension. That is the modest, defensible core of the practice.

Dermatologists are careful about the rest. “Gua sha does not permanently change bone structure, fat distribution, or muscle tone,” writes Jane Yoo, MD. “Any 'jawline contouring' effect you see is the combination of temporary de-puffing and, in some cases, a mild massage-induced muscle relaxation”. A 2026 comparative study did find that eight weeks of gua sha use improved facial contour and skin elasticity measures compared with a facial roller, but the authors framed the outcome around microcirculation and muscle tension rather than structural change. Translation: the tool is a circulation and relaxation device with a temporary visual payoff, not a non-surgical facelift.

The commercial problem is that “temporary” does not sell. Brands borrow the language of injectables and radiofrequency devices — “lifting,” “sculpting,” “contouring” — and the consumer ends up expecting a $30 stone to do what a $600 device claims to do. It won't. What a good gua sha tool will do, consistently, is reduce morning puffiness, soften jaw tension after a clenched day, and make a facial oil feel less like a greasy layer and more like a two-minute ritual that actually ends.

The lymphatic drainage claim, tested

Lymphatic drainage is the most abused phrase in the gua sha category. The lymphatic system does not have a pump; it relies on muscle movement, breathing, and manual pressure to move fluid. A gua sha tool provides that manual pressure, and a 2026 review in Dermatology Times noted that directional manual pressure “can transiently mobilize interstitial fluid toward draining lymph nodes, producing a real, if temporary, reduction in facial puffiness”. The key word is transient. You are not “draining toxins” or “unclogging” a system that was never clogged. You are moving fluid that pooled while you slept.

This matters for buying decisions. A $12 jade stone and a $68 stainless steel tool both move fluid if you use them correctly. The difference is in the glide, the temperature, the edge geometry, and how long the material survives contact with a bathroom sink.

Does gua sha tool really work for double chin and jowls?

Yes, in the same way a cold compress “works” on a swollen ankle. The effect is real and temporary. A tool with a pronounced jaw-hook edge, like the Fox Face Sculpting Gua Sha or the sculpting V on the Lanshin Pro, can reach under the mandible and apply pressure along the submental lymph nodes more precisely than a flat stone. What it cannot do is dissolve submental fat or tighten loose skin. If a product page promises permanent double-chin reduction, close the tab. The mechanism is fluid displacement and muscle relaxation, not lipolysis.

Gua sha tool benefits backed by dermatologists — and the ones sold to you by TikTok

The defensible benefits are narrow: temporary de-puffing, improved microcirculation, relief of jaw and forehead muscle tension, and better absorption of whatever oil or serum you apply beforehand. The indefensible ones include “detoxification,” “collagen stimulation” from a stone at room temperature, and “permanent lifting.” A 2026 investigation by Korean health reporters went further, quoting dermatologists who warned that gua sha does not unclog the lymphatic system or detox the body, and that aggressive scraping can irritate the skin barrier. The tool is a massage accessory. Treat it like one and you will get your money's worth.

Material Decides Everything: Jade, Rose Quartz, Stainless Steel, Bian Stone, Copper

Walk into a Sephora or scroll through Amazon's “gua sha” search results and you will see five materials presented as lifestyle choices. They are not. Material determines cooling retention, density, edge durability, hygiene, and the realistic lifespan of the tool. A stone that chips in month eight is not a budget option; it is a subscription.

Jade is the traditional entry point. It is medium-density, moderately cooling, and forgiving on sensitive skin. The problem is that “jade” on a product listing can mean nephrite, xiuyan jade, dyed serpentine, or glass. A $12 jade tool from a no-name seller is a gamble on the stone's integrity. Rose quartz is slightly cooler than jade and has a devoted following for morning de-puffing, but it is also the most commonly counterfeited material in the category — dyed glass and resin pass convincingly in photos. Bian stone is denser and warmer to the touch, traditionally used for body scraping, and better suited to firmer pressure than delicate facial work.

Stainless steel is the material that changed the value calculation. It is non-porous, easy to sanitize, and holds cold longer than any stone. A 2026 industry guide put the lifespan gap bluntly: stainless steel tools last five to ten years with proper care, while jade and rose quartz versions “typically chip, crack, or break within six to twelve months of regular use”. That does not mean steel feels better on the face — some users find it clinical and cold — but it means the cost-per-month of a $50 steel tool is lower than the cost-per-month of three $15 stones that keep arriving with rough edges.

Copper and wood occupy the margins. Copper has a luxury and “warm touch” positioning but is softer than steel and can patina; wood is lightweight and eco-friendly but porous and harder to clean. Neither is a first purchase unless you have a specific sensory preference. For most US buyers, the real decision is stone versus steel, and the answer depends on whether you prioritize ritual texture or hygiene and longevity.

Best material for gua sha tool by skin type

Oily and acne-prone skin benefits from stainless steel because it can be sanitized with alcohol without degrading, and its non-porous surface does not harbor residue. Sensitive or reactive skin usually prefers rose quartz or polished jade, provided the edges are smooth and the stone is genuine. Body-focused users who want firmer pressure should look at bian stone or a dedicated body scraper rather than a delicate facial stone. There is no single best material, but there is a worst choice: an unpolished, unverified stone with a rough edge. That is a skin-irritation device with a wellness aesthetic.

Why stainless steel outlasts stone by a factor of ten

Stone is brittle. It chips when it hits a sink, cracks when it is stored loose in a drawer, and degrades when soaked in hot water. Steel absorbs impact, tolerates repeated washing, and does not develop microscopic fissures that trap bacteria. The trade-off is thermal: steel feels colder initially, which some users love for de-puffing and others find jarring first thing in the morning. If you drop things, travel with your tools, or share a bathroom with someone who does not treat skincare accessories like glassware, steel is the rational purchase. If you want the tactile ritual of a stone that warms to your skin, buy a certified stone from a brand that will replace it if it arrives flawed.

The Best Gua Sha Tools in the US Market, Ranked

Ranking gua sha tools is an exercise in expectation management. A $15 stone and a $129 jade tool both require the same technique and the same five minutes. The differences are in material certification, edge geometry, warranty, and whether the brand treats the product as a disposable impulse buy or a tool meant to last. The five picks below cover the realistic price and use-case spectrum for US buyers in 2026. Prices are current retail figures and will fluctuate.

Mount Lai De-Puffing Gua Sha — the Amazon volume king

Mount Lai's bian stone tool is the most reviewed gua sha product on Amazon, with over 50,000 reviews and a street price around $30. The curved edge fits the jaw and cheekbone reasonably well, the bian stone has a slightly warm, textured feel that distinguishes it from slick jade, and the brand includes a technique guide — a small detail that most budget sellers skip. Mount Lai is also one of the few mass-market brands that uses third-party-certified real stone rather than dyed material. The trade-off is durability: bian stone is dense but still brittle, and the tool is not covered by a lifetime replacement policy. At $30, it is a fair entry point for someone who wants a genuine stone without paying the Lanshin tax.

Lanshin Pro Gua Sha — the acupuncturist's $129 answer

The Lanshin Pro is the tool that beauty editors keep naming “best overall” for a reason that has nothing to do with affiliate pressure: it was patented by a licensed acupuncturist with twenty years of clinical practice, and the edge geometry reflects actual facial anatomy rather than a mold copied from a competitor. It is carved from nephrite jade, which is denser and more durable than the xiuyan jade and rose quartz used by most competitors, and it has multiple working surfaces — a sculpting V for the jaw, broad sides for the neck, a lip and comb for precision work. The catch is the price and the distribution. Lanshin refuses to sell on Amazon and does not discount, so the $129 is the $129. For someone who has already tried a cheap stone and suspects it is not doing anything, the Pro is a legitimate upgrade. For a first-time buyer, it is overkill.

FaceGym Multi-Sculpt — medical-grade steel for people who hate broken stones

FaceGym's Multi-Sculpt tool is made from medical-grade stainless steel and sits at the higher end of the steel category. It is heavier than a stone, holds cold well, and will not chip if it falls off a counter. The edge profile is designed for the jaw and cheekbone, and the material makes it the easiest tool in this list to clean thoroughly. The downside is the price-to-simplicity ratio: you are paying a premium for a brand name and a steel body, not for a patented clinical shape. If you want the durability of steel without the gadgetry of an electric device, this is a solid pick. If you want steel on a budget, there are $25–$40 alternatives that perform the same mechanical function.

BAIMEI IcyMe Set — the $15 starter that doesn't pretend to be heirloom

The BAIMEI jade roller and gua sha set routinely sells for under $15 on Amazon and is the most honest product in the budget tier: it does not claim to be nephrite, it does not promise permanent contouring, and it includes both a roller and a flat stone for people who have not yet figured out which they prefer. The stone quality is variable, and the edges are not as refined as a $30 Mount Lai, but at this price the tool is a trial membership to the habit. If you use it four times and quit, you have lost the cost of two coffee drinks. If you use it for six months and the stone chips, you have learned why the $30 tier exists.

Glokore Electric Gua Sha — vibration, heat, red light, and a reality check

The Glokore is the best-value electric gua sha on the US market at $49.99. It combines high-frequency vibration, therapeutic warmth, red light (630–660nm), and blue light in a gua-sha-shaped head, undercutting the Solawave wand by more than a hundred dollars. The vibration does some of the work that hand pressure would otherwise do, which is helpful for people with grip issues or for anyone who presses too hard with a manual stone. The red light sits in a studied wavelength range, but the brand's claim of “up to 87% reduction in fine lines in two weeks” is an in-house figure with no independent trial behind it — treat it as marketing, not dermatology. If you want a gadget that adds heat and light to the gua sha motion, this is the rational buy. If you want a tool that will last a decade without a charging cable, buy steel or stone.

Comparison table: price, material, warranty, and the real cost per year

Tool Material Street price Realistic lifespan Cost per year Where to buy
BAIMEI IcyMe Set Jade (grade unverified) ~$15 6–12 months $15–$30 Amazon
Mount Lai De-Puffing Bian stone (certified) ~$30 1–2 years $15–$30 Amazon, Sephora
FaceGym Multi-Sculpt Medical-grade steel ~$65–$80 5–10 years $7–$16 FaceGym, select retailers
Lanshin Pro Nephrite jade (He Tian) $129 3–5 years (stone, careful use) $26–$43 Lanshin only (no Amazon)
Glokore Electric ABS + steel + LED $49.99 2–3 years (battery-dependent) $17–$25 Glokore, Amazon

The cost-per-year column is the number the affiliate lists never show. A $15 jade set replaced twice a year costs the same as a $30 bian stone that lasts two years, and both cost more per year than a $70 steel tool that outlives your current apartment lease. The Lanshin Pro is the outlier: its cost per year is high because nephrite can still crack, but its clinical edge geometry is the reason someone who has already committed to the practice would pay it. The Glokore's math depends on the battery — a $50 electric tool with a two-year battery is a disposable device, not an heirloom.

Gua Sha Tool How to Use: The Five-Minute Protocol That Isn't Useless

The single most common reason a gua sha tool ends up in a drawer is that the user scraped dry skin for thirty seconds, felt nothing, and concluded the tool was a scam. Technique is not complicated, but it is not optional. The skin must be lubricated, the pressure must be light, and the direction must follow lymphatic flow rather than random upward strokes.

Start with a clean face and a facial oil or a slip-heavy serum. A 2026 dermatology guide is blunt about this: “Always use gua sha over a slippery base, never on dry skin, to avoid unnecessary friction and micro-tearing”. Begin at the neck, using the broad edge of the tool with gentle upward strokes along the sides of the neck toward the jawline. Then move to the jaw: hook the tool under the mandible with light pressure and sweep toward the ear. From there, work the cheekbones outward, the under-eye area with the narrowest edge and almost no pressure, and the forehead upward toward the hairline. Each stroke should be slow and deliberate, not a frantic scrub.

The entire sequence takes four to six minutes. If it takes longer, you are either pressing too hard or using too many products. If it takes thirty seconds, you are not moving enough fluid to see a difference. The dermatologist consensus is consistent: results depend on regular use, correct tool angle, and whether the shape of the tool matches the area you are targeting. A heart-shaped stone is lovely for cheeks and jaw but clumsy around the nose. A tool with a narrow lip edge is better for the under-eye and brow bone. This is why a single flat stone is not the end of the conversation.

Gua sha face tool how to use without tearing your skin

Pressure is the variable that separates a useful session from a red, irritated face. The tool should glide, not drag. If the stone is skipping across the skin, you need more oil, not more force. If the skin turns pink and stays pink for more than a few minutes, you pressed too hard. Dermatologists also flag a timing issue: people using strong retinoids or exfoliating acids should pause those products for a few days before gua sha, and anyone who has had Botox or fillers should wait at least two weeks before applying pressure to the treated areas. The tool is not a way to “work in” an aggressive active. It is a mechanical massage, and the skin barrier does not care about your ambition.

Gua sha tool for eye bags and forehead wrinkles

Under-eye puffiness responds well to a cold tool and very light pressure. The skin around the eye is thin, and heavy scraping creates more problems than it solves. Use the narrowest edge, start at the inner corner and sweep outward toward the temple with the lightest possible contact. A stainless steel tool that has been in the refrigerator for ten minutes is more effective here than a room-temperature stone, because the cold itself constricts blood vessels and reduces the appearance of puffiness. Forehead lines are a different problem: the goal is muscle relaxation, not skin stretching. Work the tool upward from the brow bone to the hairline with moderate pressure, then use the rounded corner to apply static pressure at the glabella (the space between the eyebrows) for a few seconds. That is a tension-release move, not a wrinkle-erasure move. The line will soften temporarily because the muscle underneath has relaxed. It will come back. That is the deal.

What to use with gua sha tool (and what to skip)

The best lubricant for gua sha is a facial oil with enough slip to let the tool glide without absorbing instantly. Jojoba, squalane, and rosehip oil are common choices because they stay slippery for the duration of a five-minute session. A thick moisturizer can work if you use enough of it, but it tends to absorb too quickly and leave the tool dragging. Serums with high hyaluronic acid content are tricky: they feel slippery at first and then turn tacky, which is the opposite of what you want. Skip anything with active exfoliating acids or retinol for the session itself — the mechanical motion plus chemical exfoliation is a recipe for irritation. And skip the “gua sha massage oil” upsell if it costs more than a basic facial oil you already trust. The tool does not know what brand of oil is on your face.

Gua Sha Tool for Men, Jowls, and Lymphatic Drainage: Matching the Shape to the Job

The “for men” label in the gua sha category is mostly a colorway decision. The physiology is identical. What actually matters for male buyers — who often have larger faces, more facial hair, and a lower tolerance for a ten-step ritual — is edge size and grip. A small heart-shaped stone designed for a delicate cheekbone sweep feels like a toy on a broader jaw. A larger stainless steel tool with a pronounced jaw hook, like the Mount Lai Vitality Qi or a medical-grade steel scraper, covers more surface area per stroke and is easier to hold with a larger hand. The ritual can be three minutes: neck, jaw, forehead. That is enough to move fluid and release masseter tension, which is the benefit most men actually notice.

For jowls specifically, the tool shape matters more than the material. A flat stone can apply broad pressure along the jawline, but it cannot hook under the mandible to reach the submental area where fluid pools. A tool with a sculpting V or a pronounced curved lip — the Lanshin Pro, the Fox Face tool, or a steel contour tool with a narrow edge — can apply targeted pressure at the jaw-notche area and sweep toward the ear. This is not a fat-reduction technique. It is a fluid-displacement and muscle-relaxation technique that temporarily softens the shadow under the jaw. The effect lasts hours, not weeks. Anyone selling a gua sha tool as a permanent jowl solution is selling a fantasy with a stone in the box.

Lymphatic drainage tools are a subcategory that deserves skepticism. The word “lymphatic” is used to imply medical efficacy, but the mechanical action is the same as a standard gua sha stroke: light directional pressure toward the neck. A dedicated “lymphatic drainage tool” with a comb edge or a row of rounded bumps can feel pleasant, but it does not access a different lymphatic system than a smooth stone. The best tool for lymphatic drainage is the one you will use consistently, with a shape that fits the contour you are working on and a surface that glides without pulling.

How to Clean Gua Sha Tool Without Cracking It

Stone tools and steel tools have different cleaning rules, and the wrong method will shorten the life of either. For jade, rose quartz, and bian stone, the protocol is simple: wipe the tool with a soft cloth and mild, fragrance-free soap after every use, rinse with lukewarm or cold water, dry it completely with a lint-free cloth, and store it dry. Do not soak stone in water. Do not put it in the dishwasher. Do not use hot water, because thermal shock can crack a stone that has been sitting at room temperature. Do not use harsh chemical cleaners, because they can dull the surface and leave residue that ends up on your face.

Stainless steel is more forgiving. It can be washed with soap and warm water, wiped with isopropyl alcohol for a deeper sanitize, and dried without worry about micro-fissures. This is why steel is the better choice for anyone with acne-prone skin or for a tool that is shared between two people. Copper requires a different approach: it patinas with exposure to moisture and acids, and some copper tools are coated, so abrasive cleaners can strip the finish. Follow the manufacturer's instructions, and if there are none, treat copper like stone — mild soap, quick rinse, thorough dry.

Storage is where most stone tools die. A stone rattling loose in a bathroom drawer will chip against a bottle or a hair clip. Keep the tool in a cloth pouch, a rigid box, or the packaging it came in. If the tool does chip, stop using it. A cracked edge is a sharp edge, and a sharp edge on facial skin is a dermatologist appointment waiting to happen.

Electric, Heated, and Red Light Gua Sha: Do the Gadgets Add Anything?

The electric gua sha category is growing because it solves a real problem: manual gua sha requires technique, and most people press too hard or too soft. A vibrating tool standardizes the motion and reduces the grip effort. The addition of heat is genuinely useful for jaw tension — warmth relaxes muscle tissue, and a heated tool feels better on a clenched masseter than a cold stone. Red light is where the marketing outruns the evidence. The Glokore's red light sits in the 630–660nm range, which is a studied wavelength for collagen support, but the device's exposure time and power density are not comparable to a clinical LED panel. The light is a nice addition, not the reason to buy the tool.

Heated gua sha tools are a separate category. A stone that warms in hot water or a steel tool with a heating element can be pleasant, but heat also increases blood flow and can make the skin more reactive. If you have rosacea or sensitive skin, a heated tool is not the first thing to try. A cold steel tool is usually the better starting point for puffiness and inflammation. The “red light gua sha” combination is the most premium-priced gadget tier, and the honest assessment is this: the gua sha motion does the work, the vibration and heat make it easier or more pleasant, and the red light is a bonus that may or may not accumulate into a visible difference over months. Buy it for the motion and the ergonomics, not for the LED.

Buyer Protection in the US: Returns, Warranties, and Customs

The gua sha category has a return-policy problem that most buying guides ignore. A stone tool is fragile, and a significant percentage of online orders arrive with a chip or a rough edge. If you buy from a retailer with a generous return policy, that is an inconvenience. If you buy from a third-party marketplace seller with a fourteen-day window and a restocking fee, it is a loss.

Sephora's standard policy is the most consumer-friendly in the mass market: new or gently used products can be returned for a full refund to the original payment method within 30 days of purchase, in most cases. That policy applies to Sephora Collection gua sha tools and to brands like Mount Lai that Sephora carries. The caveat is that “gently used” is a judgment call, and a stone tool that has been used on an oiled face is not in resalable condition. Sephora still accepts it, but the return may be flagged. Amazon's policy is seller-dependent: some gua sha sellers offer a 30-day satisfaction guarantee, some offer a two-year replacement for defects, and some offer nothing beyond Amazon's standard 30-day return window. Read the seller's warranty terms before you buy, not after the stone arrives cracked.

Import duties are a smaller but real factor. The US Harmonized Tariff Schedule classifies facial massage rollers and gua sha tools under subheading 9019.10.2050, with a general rate of duty of free. That means a personal-order gua sha tool shipped from overseas is generally not subject to a customs duty. However, shipping carriers like DHL can charge brokerage fees, and some sellers ship DDP (duties delivered prepaid) while others leave the fees to the buyer. If you are ordering a $12 stone from an overseas marketplace, check whether the seller prepays duties. The tool may be duty-free, but the brokerage fee can double the landed cost.

Sephora's 30-day policy versus Amazon's seller-by-seller roulette

The practical advice is straightforward. If you are buying a stone tool and you care about the return path, buy from Sephora, a brand's own website with a stated guarantee, or an Amazon listing that explicitly offers a replacement warranty. If you are buying a $15 trial set, accept that the return shipping may cost more than the tool, and treat the purchase as a one-way experiment. The cheapest gua sha tool is not the one with the lowest sticker price. It is the one you can return when it arrives with a burr on the edge.

Import duty on a $12 jade stone from overseas

A personal-order gua sha tool is generally free of US customs duty under HTS 9019.10.2050, but the absence of duty does not mean the absence of fees. International carriers charge brokerage and handling, and some sellers do not disclose that the buyer is responsible for those charges. The landed cost of a $12 stone can be $18–$22 after shipping and fees, which narrows the gap between the budget import and a $25 domestic steel tool with a return policy. The domestic option is often the better value once the fees are counted.

What to Use with a Gua Sha Tool: Oils, Serums, and the Slip Economy

“Free” gua sha oils and “gift with purchase” sets are not free. The cost is built into the product bundle, and the oil is usually a private-label formula with a scent that may or may not agree with your skin. The better approach is to use a facial oil you already know your skin tolerates. Jojoba is the closest to human sebum and stays slippery long enough for a full session. Squalane is lighter and works well for oily skin that still needs glide. Rosehip oil is heavier and better for dry skin in winter. A basic unscented mineral oil is unfashionable but effective if you are not acne-prone.

The slip economy matters because the tool is only as good as its glide. A $129 Lanshin Pro dragged across dry skin is worse than a $15 jade stone on a properly oiled face. If you are going to spend on one thing, spend on the oil you will actually use, and buy a tool that is smooth and certified. The brand name on the stone will not save your skin barrier. The combination of light pressure, consistent direction, and enough lubricant will.

One more piece of fine print: “high quality gua sha tool” is not a regulated term. A seller can call a dyed glass stone “high quality” without violating any US labeling rule, because gua sha tools are cosmetic accessories, not medical devices. The only meaningful quality signals are third-party material certification, a stated return policy, and a brand that has been in the category long enough to have a reputation to lose. If a listing has none of those, the stone is a lottery ticket with a beauty aesthetic.

FAQ

Does a gua sha tool really work, or is it just TikTok hype?

It works for temporary de-puffing, jaw tension relief, and improved microcirculation during and after use. Dermatologists agree the effect is real but transient, and there is no evidence that a stone permanently changes bone structure, fat distribution, or muscle tone. Treat it as a massage tool with a short-term visual payoff, not a structural treatment.

What is the best material for a gua sha tool?

Stainless steel is the most durable and hygienic option, lasting five to ten years versus six to twelve months for most stones. Rose quartz and jade are better for sensitive skin and ritual feel, but they require careful storage and a certification of authenticity. Bian stone is denser and better for body work. The best material is the one that matches your skin type and tolerance for maintenance.

How often should I use a gua sha tool?

Once a day is sufficient for most people, usually in the morning for de-puffing or in the evening for jaw tension. The results depend on consistency more than duration. A four-to-six-minute session with light pressure and proper lubrication is more effective than a twenty-minute aggressive scrape once a week.

Can a gua sha tool get rid of a double chin?

No. It can temporarily reduce the appearance of puffiness under the jaw by moving fluid, and it can relax the masseter muscle, which may soften the shadow. It cannot dissolve submental fat or tighten loose skin. Any product that promises permanent double-chin reduction from a gua sha tool is making a claim the tool cannot support.

How do I clean a gua sha tool without damaging it?

For stone tools, wipe with mild fragrance-free soap and lukewarm water, rinse quickly, dry completely, and store in a cloth pouch. Do not soak, do not use hot water, and do not put it in the dishwasher. Stainless steel can tolerate warm water and isopropyl alcohol. Copper needs gentle soap and thorough drying to avoid patina.

Is an electric gua sha tool worth the extra money?

It is worth it if you have grip issues, press too hard with a manual tool, or want heat and vibration to standardize the motion. The red light is a bonus, not the main event. A $50 electric tool is a reasonable buy for the ergonomics; a $170 wand is a premium for features that a manual tool plus a warm compress can approximate.