Milk Protein
AKA “Milk Protein Extract
Synthetic
Ingredient Facts
Milk protein
AKA: Milk Protein Extract
Synthetic · Hair Conditioning · EWG: 4
Synthetic
Skin Conditioner
Hair Care
Synthetic
Clean
Milk Protein gently conditions and softens both hair and skin, helping to improve texture and smoothness while maintaining natural moisture balance.
CAS #
91053-68-8
Form
Powder
State
Solid
See origin →
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
Traditional Use
Milk has been used in skincare for millennia—Cleopatra famously bathed in milk for skin softening. Modern cosmetics extract and concentrate milk proteins for their amino acid content and moisturizing properties.
Skin Types
all-skin-types
Best For
Dryness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Safety Assessment of Bovine Milk Proteins and Protein Derivatives as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Hydrolyzed Milk Protein
European Commission
EU Cosmetic Ingredient Database (CosIng)
Hydrolyzed Soymilk Protein
European Commission
EU Cosmetic Ingredient Database (CosIng)
Milk Protein
European Commission
EU Cosmetic Ingredient Database (CosIng)
Hydrolyzed Milk Protein
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Hydrolyzed Soymilk Protein
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Milk Protein
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Milk Protein Extract
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Cow's Milk Protein Allergy.
Malik R, Kaul S
Indian journal of pediatrics, 2024
Cow's milk protein allergy.
Solinas C, Corpino M, Maccioni R, Pelosi U
The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians, 2010
Verified Feb 2026
Data: CosIng · EWG · CIR