100% L-Ascorbic Acid Powder
The Ordinary 100% L-Ascorbic Acid Powder is a serums, essence, ampoule. Our analysis of its 1 ingredient rates it Excellent (100/100).
The Ordinary 100% L-Ascorbic Acid Powder is a serums, essence, ampoule. Our analysis of its 1 ingredient rates it Excellent (100/100).
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning) |
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How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
The concentrations these actives are typically effective at in research — not a measurement of this product.
L-ascorbic acid is usually used at 5–20% (around 10–15% is common). Above ~20% adds little and tends to irritate more; it also needs a low pH to work.
ASCORBIC ACID
INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.
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