Open Instagram and search for gua sha, and you'll encounter claims that span everything from lymphatic drainage to collagen stimulation, jaw sculpting, dark-circle elimination, and what is sometimes described as a non-surgical facelift done with a stone. Some of these claims have been studied. Others have outpaced the available research by a significant margin.
Gua sha is a legitimate skincare practice with a long history in East Asian skincare traditions, and more recent interest from researchers studying facial massage. The tool is appealing because it's simple, pleasant to use, and pairs well with a face oil. But the way it's marketed, particularly on social media, has created expectations that the published literature doesn't fully support.
This article takes an honest look at gua sha face benefits: what the research on the appearance of skin actually shows, what's plausible but still being studied, and what's worth treating with skepticism. If you're deciding whether gua sha belongs in your skincare ritual, that honest picture is more useful than a list of oversold promises.
Kōzōn products are cosmetics intended for topical use. They are not intended to diagnose, treat, cure, or prevent any disease or condition. The research notes below summarize published studies as a category of inquiry, they are not claims about specific Kōzōn products.
What Research Has Looked At
A handful of published studies have examined gua sha in a research context. Here's what they've found, described the way they were actually framed.
The Appearance of Facial Contour
A 2025 randomized controlled trial published in PMC (PMC12121324) measured changes in facial contour following a course of gua sha treatment, reporting differences of 2.23 to 2.40 millimeters in treated areas. The researchers noted that gua sha, through its IASTM (instrument-assisted soft tissue mobilization) mechanics, appears to affect deeper tissue layers than facial rollers, which primarily interact with surface tissue.
Two to two-and-a-half millimeters is a real, measurable difference. It's also a modest one. The honest framing: a consistent gua sha ritual has been associated, in this study, with a subtle appearance change. It is not a substitute for structural interventions, and expecting dramatic reshaping will lead to disappointment.
The Appearance of Morning Puffiness
One of gua sha's most commonly cited appeals is its association with a less-puffy morning face. The research on this specific outcome is limited to small studies and practitioner observation rather than large controlled trials, but the association is consistent enough in the literature that it's worth naming, as an observation about the appearance of the skin after a morning ritual, not as a claim about what the tool does to any body system.
In practice, many shoppers describe the same pattern: they wake up with noticeable fluid retention around the eyes and cheeks, especially common after a salty meal or disrupted sleep, and report that a short morning gua sha ritual helps their face look more defined earlier in the day. The tool hasn't changed their bone structure. But as a morning ritual, many people find the visible difference worth the three minutes.
For people who notice a puffy-looking face most mornings, this is probably gua sha's most practical and consistently described effect.
A Note on Microcirculation Research
A 2007 study published in PubMed (PMID 17905355) measured changes in local microcirculation following gua sha treatment on body tissue. It's frequently cited in gua sha marketing as evidence that the practice "boosts circulation."
We've chosen not to frame that study as a benefit of our gua sha tool. Circulation is a function of the body, not an appearance of the skin, and Kōzōn products are cosmetics, not interventions that change body systems. The study is interesting as research; it is not a claim Kōzōn would make about any of our products.
If you want to read the published research directly, the citations appear at the end of this article.
What's Plausible but Still Being Studied
A few outcomes associated with gua sha rest on reasonable grounds but haven't been well-established in controlled facial studies. They're worth naming because the reasoning is credible, but they shouldn't be treated as established facts.
The Ritual Itself
Gua sha originated as a body-care practice with centuries of history in East Asian traditions. Its migration to facial use is relatively recent. The body tradition is substantially older than the facial tradition, but the mechanics people describe, pressure, glide, a cool stone, attention to technique, are comparable.
Many people who use gua sha regularly describe the practice as grounding and unhurried, a slower, more intentional three or four minutes in an otherwise rushed morning or evening. That ritual quality is real and is probably why the practice has held on across centuries.
Whether the ritual quality produces any specific physiological change is a different question, and one the research hasn't answered for facial use. What we can say is that a deliberate skincare practice tends to produce more consistent outcomes than a hurried one, not because of the tool, but because consistency is what moves the needle in skincare over time.
Using Gua Sha With a Face Oil
Pairing gua sha with a face oil is a practical choice for a simple reason: the oil provides the glide the stone needs to move comfortably across the skin, and the stone provides the time and intention a quick fingertip application doesn't. You spend more time with the product on your skin, you work it in more evenly, and the ritual itself becomes the pacing cue for your whole skincare routine.
This is a ritual and sensory benefit, not a penetration or absorption claim. Oils that sit on the skin longer, applied with more intention, simply become part of a more considered routine.
Pairing gua sha with a face oil improves both glide and ritual. Learn how to combine both tools in Kōzōn's guide to using gua sha with face oil.
Claims That Exceed the Evidence
A 2023 review published in the Journal of Cosmetic Dermatology assessed the published literature on gua sha's cosmetic benefits and concluded directly: "many proposed benefits, few of which have been illustrated in the literature." That's a significant statement from a peer-reviewed source.
Specifically, the following claims are not supported by clinical research on facial gua sha:
Collagen stimulation. Collagen-boosting claims for gua sha appear regularly in product marketing and on social platforms. The 2023 review found no clinical demonstration of collagen stimulation from facial gua sha. Approaches associated with collagen induction, microneedling, laser resurfacing, certain chemical peels, work through mechanisms that don't apply to a stone moving across the surface of the skin.
Dark-circle elimination. The under-eye area is notoriously difficult to address. The appearance of dark circles is influenced by pigmentation, thin skin, visible vasculature, or volume loss, factors the research doesn't show gua sha meaningfully affects.
Permanent facial reshaping. The 2025 RCT showed measurable appearance differences after a course of treatment. It did not show permanent structural change. The appearance difference was modest and context-dependent; calling the practice "facial reshaping" overstates what was observed.
Anti-aging effects. Beyond what a consistent, intentional skincare ritual provides (which is modest but real), gua sha does not have a demonstrated anti-aging mechanism in facial studies. Claims that it "reverses aging" or "lifts" the face structurally are not supported.
Crystal energy. Some gua sha tools, including those made from amethyst, jade, or rose quartz, are marketed with claims about crystal energy or vibrational properties. There is no scientific basis for those claims. The material a gua sha tool is made from affects its thermal properties (how cool or warm it feels in the hand), its weight, its glide, and its durability. Material does not transmit anything beyond the physical.
The value of gua sha, based on what the research and the practice itself actually support, comes from the mechanics of the massage and the intentionality of the ritual. A well-made amethyst tool is worth having because it glides well, holds a cool touch, and feels pleasant to use, not because of anything energetically inherent in the stone. (If you want to compare amethyst and rose quartz on their actual physical properties rather than symbolism, see our amethyst vs rose quartz gua sha comparison.)
Who Gets the Most Out of a Gua Sha Ritual
Gua sha is not universally transformative. The following profiles tend to describe the most consistent value from adding it to a skincare routine:
People who notice a puffy-looking face in the morning. If you reliably wake up with visible fluid retention around the eyes, cheeks, or jaw, a consistent morning gua sha ritual is frequently described as helpful for the appearance of the face earlier in the day.
People who find rushed mornings or evenings leave their skincare routine feeling perfunctory. The ritual component is not trivial. Slowing down, spending three to five minutes on a deliberate practice, and applying products with intention rather than rushing through them changes how the routine feels, and consistency is what produces visible results in skincare over time.
People who already apply a face oil. If you're applying an oil anyway, working it in with a stone rather than your fingers adds ritual and sensory value. The product benefit you already get from your oil stays the same; the ritual value is what's added.
People who enjoy a practice with a long tradition. Gua sha has been part of East Asian skincare traditions for centuries. For people who enjoy being connected to a practice with history, that cultural continuity is itself part of the appeal.
Gua sha is less likely to produce noticeable results for people hoping to achieve structural facial changes, address established skin conditions, or replace targeted skincare steps like sunscreen or a retinol routine.
The Role of Consistency
Most of what the research and experienced practitioners describe about gua sha points the same direction: results build with consistency. A single session produces temporary, short-lived appearance changes. The contour measurements in the 2025 RCT were observed after repeated treatment, not a one-time application.
This is true of most skincare practices. The useful question isn't "will I see a difference immediately?" but "is this a practice I can maintain over weeks and months?"
Three to five minutes, three to five times per week, following a technique that's considered rather than aggressive, is a realistic baseline. If that fits your routine, you're positioned to see the kind of subtle, cumulative appearance differences the research actually supports.
New to gua sha? Kōzōn's Amethyst Face Gua Sha pairs with the how to use gua sha guide, covering strokes, pressure, and technique for beginners. For frequency guidance, see how often to use gua sha.
The Bottom Line
Gua sha is a legitimate facial skincare tool with a long history and a small but real research base. The honest framing of what the research supports is modest: subtle, measurable appearance changes in facial contour with consistent use; an association with a less-puffy-looking morning face; and the ritual, sensory, and consistency benefits that come from any deliberate skincare practice.
The claims that exceed the evidence, collagen stimulation, permanent reshaping, dark-circle elimination, crystal energy, circulate widely. They are not supported by the published research on facial gua sha.
What gua sha does well is provide the pacing, ritual, and sensory quality of a deliberate skincare practice in a structured, repeatable format. For the right person, especially someone dealing with a puffy-looking morning face, or wanting a slower and more intentional skincare ritual, it's genuinely worth adding to a routine.
Expect what the research actually shows. You're likely to be satisfied.
This article is for informational purposes only. Kōzōn products are cosmetics intended for topical use and are not intended to diagnose, treat, cure, or prevent any disease or condition. If you have a skin concern, consult a qualified healthcare provider.
Formulated and written by Szilvia Szuts, Founder Last updated: April 2026
Sources
- Microcirculation study: PubMed, 2007 (PMID 17905355)
- Gua sha and facial contour RCT: PMC, 2025 (PMC12121324)
- Journal of Cosmetic Dermatology, 2023, evidence review for cosmetic gua sha claims
See also: activated oxygen skincare.