Snapshot
- Overview
- An amino acid that helps skin hold moisture and stabilizes formulas.
- Category
- Hydration, Skin Conditioning, Antioxidant
- Type
- Humectant
Methionine
Methionine is a sulfur-containing essential amino acid used as a cosmetic ingredient. Formulators include it to support water binding and in-formula antioxidant activity that aids product stability without a heavy feel.
Like this ingredient?
Our take
Is Methionine a Good Ingredient?
It acts as a water-binding amino acid and offers antioxidant support with generally good tolerability, which is enough for Good. It isn't a powerhouse active, but it reliably contributes to hydration and stability.
What it does
Skin Benefits
Improves moisture retention for a supple feel, and provides antioxidant support within formulas that may indirectly protect products and skin from oxidation.
Where you'll find it
Uses in Skincare & Cosmetics
Included in hydrating serums, gel moisturizers, and essences to boost water content. Also used in sheet masks and toners as a light replenishing step.
Before you use it
Safety
Usually well tolerated and water-soluble, with low irritation likelihood. Rare sensitivity can occur; discontinue if stinging or redness appears.
Products with Methionine
