Science
Mechanism of Action
This ingredient functions by delivering small, bioavailable amino acids and peptides to the skin, which are readily absorbed. These smaller molecular components actively strengthen the skin's natural barrier, thereby reducing transepidermal water loss. It also exhibits film-forming, humectant, and moisturizing properties, ensuring the skin remains hydrated and in optimal condition.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Hydrolyzed proteins are generally water-soluble. Their solubility is highly dependent on pH and ionic strength, typically being lowest at their isoelectric point and increasing as pH deviates towards acidic or alkaline ranges. Optimal pH for stability can vary widely depending on the specific hydrolyzed protein.
Conflicts
- Glycolic acid
- Lactic acid
- Lye (Sodium Hydroxide)
- Potassium Hydroxide
- Alcohol
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Hydrolyzed Serum Protein, part of a group of 19 skin and connective tissue-derived proteins and peptides, is safe in current practices of use and concentration. Its safety assessment particularly focused on irritation and sensitization potential, noting that Hydrolyzed Serum Protein consists of small peptides, predominantly with molecular masses less than 1.04 kDa at maximum hydrolysis. While generally safe, the CIR has advised caution for other hydrolyzed proteins (e.g., hydrolyzed wheat protein), recommending restriction of peptide molecular weight to 3500 Da or less and avoidance on damaged skin or in products with potential mucous membrane contact or incidental inhalation, to minimize sensitization risks.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Hydrolyzed Serum Protein is a valuable ingredient for enhancing skin barrier function, promoting hydration, and improving skin resilience through its easily absorbed peptide and amino acid components.
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