Humectant

Milk Protein

Reviewed by Kate · Last updated 18 Aug 2026

Nourishing proteins for skin conditioning

Addresses

dryness, rough texture

What Is Milk Protein?

Milk Protein encompasses the various proteins found in milk, including casein and whey proteins. These proteins provide excellent conditioning and moisturising benefits, helping to soften and smooth the skin.

Rich in amino acids, milk proteins help nourish the skin while forming a protective film that helps retain moisture. They have been used in beauty rituals since ancient times.

How widely it's used

0.1%
of skincare products contain this ingredient — placing it in the top 50% of most-used ingredients.
Most common in: Treatments Cleansers Moisturisers

Regulatory information

Standardised cosmetic-ingredient identifiers used by regulators.

Show identifiers
INCI Name
MILK PROTEIN
Function
Hair Conditioning, Skin Conditioning

From the Clinic

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