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Hydroxyproline

What Hydroxyproline is & what it does

Hydroxyproline is an amino acid that occurs naturally as a major building block of collagen, where it helps stabilize the protein's structure. In cosmetic formulas it is used as a skin-conditioning and humectant-style agent, valued for its water-binding capacity. It is commonly included in products positioned around hydration and skin firmness support.

What does Hydroxyproline do in skincare?

Hydroxyproline is an amino acid used in skincare as a skin-conditioning and humectant-style ingredient. It is a natural building block of collagen and has good water-binding capacity, so it is often included in hydration and firmness-focused formulas. In products it mainly helps support a smooth, moisturized feel.

Is Hydroxyproline safe?

Hydroxyproline is an amino acid that occurs naturally in the body and is generally considered well tolerated in cosmetic use. It is typically used at low levels as a conditioning agent. As with any ingredient, those with very sensitive skin can patch test before regular use.

Is Hydroxyproline natural or synthetic?

Hydroxyproline occurs naturally as a component of collagen, but the cosmetic-grade ingredient can be produced by biotechnological or synthetic processes. The molecule is identical regardless of source. The exact origin depends on the supplier's manufacturing method.

Sunscreens with Hydroxyproline

We rate 9 sunscreens that contain it:

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