Rice water and fermented skincare
Rice toners · galactomyces · 'glass skin secret'
Rice water became a recurring TikTok 'glass skin secret' from 2021 onward, and rice toners and galactomyces essences from Korean brands are now among the most-dupe-hunted products on skincare forums.
A trend built on a pretty idea. Fermented rice extracts are pleasant hydrators; the glass finish in the videos comes from hydration, lighting and a well-timed ring light, not from rice.
Reviewed against the Aesthetics International standard. Category: Viral routines.
Does Rice water and fermented skincare work?
Trend. A trend built on a pretty idea. Fermented rice extracts are pleasant hydrators; the glass finish in the videos comes from hydration, lighting and a well-timed ring light, not from rice. There are no clinical trials of DIY rice water.
- Verdict
- Trend Popular for reasons that are mostly social. Harmless at best; manage expectations.
- Evidence base
- 3 PubMed-indexed studies cited below, including randomised trials.
- Suits
- People who enjoy a gentle hydrating toner and want a low-risk step; commercial products rather than kitchen rice water.
- Not for
- Anyone expecting brightening of melasma, pore change or 'glass skin' from a toner. Homemade rice water on acne-prone or broken skin.
- In Singapore
- Rice and galactomyces ferment products are sold in Singapore as notified cosmetics.
- Category
- Viral routines
- Reviewed
- 1 October 2026 by Aesthetics International. Revised as evidence and regulation change.
What it is
Rice water is the starchy liquid left after soaking or boiling rice, applied as a DIY toner. Commercial versions use rice bran extract, rice ferment filtrate or galactomyces ferment filtrate, a yeast fermentation product that was the basis of a famous Japanese essence. All are marketed for brightness, smoothness and 'glass' skin.
How it works
Rice bran contains ferulic acid, gamma-oryzanol, inositol and ceramide-like lipids that are mildly antioxidant and moisturising in the laboratory; the starch in DIY rice water leaves a film that makes skin feel smooth. Fermentation breaks ingredients into smaller molecules and adds amino acids and organic acids, which is a plausible route to hydration and gentle exfoliation. The dose in a toner is small, and homemade rice water contains almost nothing active and grows bacteria quickly.
What the evidence says
There are no clinical trials of DIY rice water. For commercial ferments the data are thin and mostly sponsored: one small RCT of a galactomyces, panthenol and centella serum reported improvement in post-acne marks in skin of colour, laboratory work shows galactomyces filtrate dampens inflammatory signalling in keratinocytes, and an open-label study found oral rice ceramides improved barrier measures. None of this supports the brightening or pore claims attached to rice toners on social media.
What people are saying
Paraphrased from public discussion on TikTok, Instagram, Reddit and in the press. Not testimonials, and not about any one clinic. Reported in: whowhatwear.com, buzzfeed.com.
What the studies show
- RCT
A combination serum containing galactomyces ferment filtrate reduced post-acne hyperpigmentation scores over the study period compared with control.
The Effectiveness of Galactomyces Ferment Filtrate, Dexpanthenol, and Centella Asiatica Combination Serum in the Treatment of Post-Acne Hyperpigmentation in Subjects with Skin of Color — Skinmed, 2021. PMID 33938432.
- review
In keratinocyte models galactomyces ferment filtrate reduced inflammatory signalling and oxidative stress markers associated with skin ageing.
Galactomyces Ferment Filtrate Potentiates an Anti-Inflammaging System in Keratinocytes — J Clin Med, 2022. PMID 36362566.
- cohort
Oral rice-derived ceramides were associated with improved hydration and barrier measures in an uncontrolled open-label study.
Effect of Rice (Oryza sativa L.) Ceramides Supplementation on Improving Skin Barrier Functions and Depigmentation: An Open-Label Prospective Study — Nutrients, 2022. PMID 35807914.
Studies are selected for relevance and quality, not for agreement with the verdict; PubMed records are linked so the reader can check them.
Who it suits
Suits
People who enjoy a gentle hydrating toner and want a low-risk step; commercial products rather than kitchen rice water.
Not for
Anyone expecting brightening of melasma, pore change or 'glass skin' from a toner. Homemade rice water on acne-prone or broken skin.
Alternatives
The two reviewed treatments most often weighed against Rice water and fermented skincare, on the same standard.
| Rice water and fermented skincare | Pico laser | RF microneedling | |
|---|---|---|---|
| Verdict | Trend | Vetted | Vetted |
| What it is | Rice water is the starchy liquid left after soaking or boiling rice, applied as a DIY toner. | A picosecond laser delivers energy in pulses a thousand times shorter than the nanosecond lasers that came before it. | Insulated or non-insulated microneedles deliver radiofrequency energy at a chosen depth below the surface. |
| Evidence base | 3 PubMed-indexed studies cited below, including randomised trials. | 4 PubMed-indexed studies cited below, including systematic reviews. | 3 PubMed-indexed studies cited below, including systematic reviews. |
| Suits | People who enjoy a gentle hydrating toner and want a low-risk step; commercial products rather than kitchen rice water. | Sun spots, freckles, post-acne marks, tattoo ink, uneven tone in Asian skin when energy is set conservatively. | Acne scars, enlarged pores, early laxity, melasma-prone skin that cannot take ablative lasers, and selected body contouring when the plane is mapped first. |
| In one line | A trend built on a pretty idea. Fermented rice extracts are pleasant hydrators; the glass finish in the videos comes from hydration, lighting and a well-timed ring light, not from rice. | The variable that matters is depth, not brightness, and pigment already deposited is only half the problem; the inflammation producing it is the other half. | The tissue plane, not the device, decides whether you tighten skin or remodel fat. The brand war is a distraction from that. |
Risks
Bacterial growth in homemade rice water stored at room temperature, irritation from fermentation by-products, and breakouts in some oily skins. Low risk with commercial products.
In Singapore
Rice and galactomyces ferment products are sold in Singapore as notified cosmetics. Homemade preparations are unregulated.
“A trend built on a pretty idea. Fermented rice extracts are pleasant hydrators; the glass finish in the videos comes from hydration, lighting and a well-timed ring light, not from rice.”
Vetted protocols on the same problem
Questions
Does rice water brighten skin?
What is galactomyces?
Is homemade rice water safe?
Cite this review
Aesthetics International (2026). Rice water and fermented skincare: does it work? Evidence, risks and verdict. https://aesthetics-international.org/treatments/rice-water-fermented-skincare/ (reviewed 1 October 2026).
Editorial, unpaid and independent of any manufacturer. Verdict: Trend. See what works and what doesn't across all 153 reviews. Spotted an error or a newer study? Suggest a correction — changes are logged on the corrections page. Terms are defined in the glossary.
Where this review is used
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