Silk Protein — Allergy Risk & Safety Profile
INCI: HYDROLYZED SILK
Also known as: Sericin, Silk Amino Acids
Key Facts
- CAS Number
- 96690-41-4
- Category
- protein
- Risk Level
- low
- Common Allergen
- No
- Found In
- hair serum, conditioner
Is Silk Protein safe in cosmetics?
Silk Protein is rated low risk in cosmetic products. It is not classified as a common allergen and is generally well-tolerated by most skin types. Commonly found in hair serum, conditioner.
What is Silk Protein?
Silk Amino Acids is a protein commonly used in cosmetic and personal care products. It is generally considered safe for use in cosmetics at recommended concentrations.
Allergy & Safety Information
Silk Amino Acids is considered safe for cosmetic use. No significant safety concerns have been identified at typical use concentrations. As with any cosmetic ingredient, discontinue use if irritation occurs.
This ingredient is considered low risk from an allergenicity perspective. Reactions are uncommon at typical cosmetic use concentrations. However, no ingredient is universally safe — if you notice redness, itching, or irritation after using a product containing this ingredient, discontinue use and monitor whether symptoms resolve.
How to Identify Silk Protein in Products
Cosmetic ingredients are listed by their INCI (International Nomenclature of Cosmetic Ingredients) name in descending order of concentration. To check whether a product contains Silk Protein, scan the ingredient list for its INCI name exactly as it appears above. Ingredients present at 1% or less may appear in any order after the 1% threshold.
Product types to prioritise checking: Hair serum, Conditioner. These product categories are the most common sources of Silk Protein exposure based on formulation data.
Not sure if your products contain Silk Protein? Paste the ingredient list into the free ingredient checker to scan for Silk Protein and other allergens automatically.
Frequently Asked Questions
Is Silk Amino Acids safe for sensitive skin?
Silk Amino Acids is generally well-tolerated, even by sensitive skin types.
What products contain Silk Amino Acids?
Silk Amino Acids is commonly found in hair serum, conditioner.
What does Silk Amino Acids do in cosmetics?
Silk Amino Acids functions as a protein in formulations.
Related Guides
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