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Milk Protein

What Milk Protein is & what it does

Milk Protein is a protein fraction obtained from cow's milk, used in skincare as a conditioning agent. It is composed mainly of casein and whey proteins along with their peptides and amino acids, which help bind water and form a smooth film on the skin and hair. In formulas it is typically added for a soft, conditioned skin feel and to support surface hydration.

What does Milk Protein do in skincare?

Milk Protein acts as a conditioning agent that helps skin and hair feel soft and smooth. It is made of casein and whey proteins plus peptides and amino acids that bind water and form a light film on the surface. In formulas it is used to support a hydrated, conditioned skin feel.

Is Milk Protein vegan?

No, Milk Protein is not vegan. It is derived from cow's milk, so it is an animal-sourced ingredient. Products labeled vegan would use plant proteins such as soy, oat, or pea protein instead.

Is Milk Protein safe?

Milk Protein is generally regarded as safe for use in cosmetics. The main consideration is for people with a milk allergy, since milk-derived proteins could in theory trigger a reaction in sensitive individuals. Anyone with a known dairy allergy may want to check the ingredient list and patch test.

Sunscreens with Milk Protein

We rate 15 sunscreens that contain it, showing the top 10 by overall score:

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