Rice appears in hundreds of skincare products. Most of them contain it at trace concentrations — under 1%, often far less. The Dr Melaxin Peel Shot contains Rice Bran Water at 640,000ppm. That number is not marketing. Here is what it means and why it matters.
Understanding ppm in skincare
Parts per million (ppm) is how ingredient concentration is measured precisely in formulations. 640,000ppm means 640 grams of Rice Bran Water per kilogram of formula — or 64% by weight. To put that in context: the average rice-based skincare product contains rice extract at 1,000 to 10,000ppm. Many contain less.
At 640,000ppm, Rice Bran Water is not an additive in the Peel Shot. It is the base. The formula is built around it the way water is the base of a moisturiser. Everything else — the PHAs, the Niacinamide, the Hyaluronic Acid — is dissolved into a rice medium.
What Rice Bran Water actually does
Rice bran is the outer layer of the rice grain removed during milling. It is nutritionally dense — high in antioxidants, fatty acids, and vitamins — and when processed into a water-soluble extract, it delivers several documented benefits to skin:
- Brightening: Rice bran contains compounds that inhibit tyrosinase, the enzyme responsible for melanin production. This is the same mechanism as Arbutin and Kojic Acid, but delivered through a gentler, less irritating medium.
- Barrier support: The fatty acid content supports the lipid layer of the skin barrier, helping skin retain moisture and resist environmental stress.
- Antioxidant protection: Rice bran is high in gamma-oryzanol and Vitamin E, both established antioxidants that protect against oxidative damage.
- Soothing: At high concentrations, rice extract has been shown to reduce skin reactivity and support recovery in compromised skin.
Why concentration matters
The active compounds in rice bran — the brightening agents, the antioxidants, the fatty acids — need to be present at meaningful concentrations to have a meaningful effect. A product that lists Rice Extract at position 22 in the ingredient list (which indicates it is present at under 1%) is not delivering the benefits that rice can provide. It is using rice as a marketing story rather than a functional ingredient.
The 640,000ppm concentration in the Peel Shot is high enough that it functions as the primary delivery medium for every other active in the formula. When Gluconolactone, Salicylic Acid, and Niacinamide are suspended in a 64% rice bran base, the skin receives those actives alongside every compound present in the rice itself.
The Korean formulation standard
The reason this kind of concentration is achievable in K-beauty rather than in Western skincare has to do with manufacturing culture. Korean formulators have historically been willing to invest in higher active concentrations and more complex delivery systems than Western mass-market brands. The result is a category of products where the ingredient list reflects actual efficacy rather than label compliance.
The Dr Melaxin formula was developed within this tradition. The 640,000ppm figure exists because the formulation required it to work — not because it tests well in consumer research.
