Snapshot
- Overview
- An amino acid that draws in moisture for plumper, more comfortable skin.
- Category
- Hydration, Barrier Support, Skin Conditioning
- Type
- Humectant
Threonine
Threonine is an essential amino acid used as a cosmetic humectant and conditioning agent. Hydrating formulas choose it to attract moisture, support a supple feel, and reinforce the look of a healthy barrier.
Like this ingredient?
Our take
Is Threonine a Good Ingredient?
It rates Good because this amino acid works as a gentle humectant that supports skin feel and hydration, with strong formulation stability and low irritation potential. The benefits are supportive rather than transformative, which fits its role in hydrating blends rather than as a standout active.
What it does
Skin Benefits
Draws in moisture to help skin feel plump and comfortable, promoting a bouncy, well-hydrated appearance and a healthier-looking surface.
Where you'll find it
Uses in Skincare & Cosmetics
Common in hydrating serums, creams, and sheet masks formulated for dryness or a tight, uncomfortable skin feel.
Before you use it
Safety
Widely tolerated with a very low risk of irritation. Rare individuals may experience minor sensitivity; discontinue if discomfort occurs. No notable regulatory restrictions known.
Products with Threonine
