Whey Protein\Lactis Protein\Protéine Du Petit-Lait

WHE

8/10

Concern level

High concern

Milk-derived protein fraction used in cosmetics as a skin-conditioning and film-forming ingredient. It can help support a smoother feel and may contribute to moisturization and barrier support in rinse-off and leave-on products. Because whey protein is a complex mixture rather than a single discrete molecule, molecular weight and exact physicochemical parameters are not well-defined.

Pore-clogging

Non-comedogenic

Pregnancy

Safe

Regulatory

No data

Benefits

MoisturizingSoothingSupports Barrier Function

Chemical Properties

Typical Concentration

0.10% - 5.00%

CAS Number: 84082-51-9

Skin Type Compatibility

dry skin8/10

oily skin5/10

sensitive skin6/10

acne prone6/10

mature skin7/10

normal skin8/10

Interactions

incompatible with: Avoid if the user has a known milk-protein allergy, May be less suitable in formulas with strong oxidizers or very harsh low-pH/high-heat processing if the protein is unhydrolyzed

Risks & Warnings

Low-risk ingredient overall, but it is a dairy-derived protein and may be problematic for users with milk-protein allergy or highly reactive skin. Sensitization is possible, especially in compromised skin or in products that also contain fragrance or other allergens. Not considered comedogenic in typical cosmetic use.

Vegan Cruelty-Free

Found In Products

Estée Lauder

Advanced Night Repair Eye Lift + Sculpt Eye Cream

CLINIQUE