Hydroxyproline

Hydroxyproline is an amino acid derivative associated with collagen that's incorporated into skincare as a conditioning humectant. It increases water binding and surface suppleness, improving slip and comfort in hydrating formulas.
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Ingredient Snapshot

Overview
A collagen-related amino acid that boosts moisture for plumper skin.
Category
Hydration, Skin Conditioning
Type
Humectant

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Boosts moisture retention so skin feels plumper and smoother. Improves softness and skin comfort without heaviness.

Uses In Skincare & Cosmetics

Included in hydrating serums, essences, sheet masks, and daily moisturizers to support dewy hydration routines.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Generally low irritation risk and suitable for most skin types. Very sensitive users may notice brief tingling; discontinue if persistent.

Is Hydroxyproline a Good Ingredient?

Rated Good because it's a dependable humectant with strong tolerance and consistent moisturizing benefits. The data mainly supports hydration outcomes rather than structural anti-aging claims, which is why it stops at Good.

Products with Hydroxyproline

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