Hydrolyzed Casein
What is Hydrolyzed Casein?
Hydrolyzed Casein comes from casein, the main protein in cow's milk, broken down through hydrolysis into smaller peptides and amino acids for better solubility in water-based formulas. It appears in hair conditioners, shampoos, moisturizers, and lotions within rinse-off and leave-on cosmetics. Functionally, it forms a lightweight film on skin and hair cuticles, locking in hydration while reducing friction for smoother surfaces. These peptides mimic natural moisturizing factors, drawing water to the stratum corneum and supporting barrier integrity without greasiness. In hair products, it neutralizes static charges, aiding detangling and shine. Its mild nature suits daily use in family formulations, blending well with humectants and emollients.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Boosts skin hydration and softness through moisture retention.
Enhances hair smoothness and manageability by minimizing static.
Supports skin flexibility and protective barrier function.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Individuals with dry or rough skin seeking added hydration. | People allergic to milk proteins. |
| People with frizzy or static-prone hair needing conditioning. | Individuals preferring vegan or dairy-free products. |
| Those aiming to improve overall skin and hair texture gently. | Those with known sensitivities to protein hydrolysates. |
Safety Notes
- Considered low hazard with EWG scores of 1.
- Non-comedogenic, unlikely to clog pores.
Frequently Asked Questions about Hydrolyzed Casein
What is Hydrolyzed Casein?
A soluble form of milk casein protein used to hydrate and condition skin and hair in cosmetics.
Is it safe for daily use?
Yes, it has a low safety rating and suits most formulations without issues.
Does it help with dry skin?
It retains moisture and softens skin, aiding hydration.