Cosmetic ingredient dictionary
Hydrolyzed Silk in cosmetics: what it is and what it does
Hydrolyzed Silk is a cosmetic ingredient that holds water in the skin or the product. It is not vegan: it comes from silkworms. Open Beauty Facts finds it in 82 products, most often hair care.
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What does Hydrolyzed Silk do in a product?
In a cosmetic product, Hydrolyzed Silk holds water in the skin or the product, keeps the skin in good condition and makes hair easier to comb, softer or shinier. The EU’s CosIng database lists these jobs for it: humectant, skin conditioning, hair conditioning and antistatic.
What other names and numbers does Hydrolyzed Silk have?
- CAS number
- 96690-41-4
- EC number
- 306-235-8
- CosIng reference
- 34459
Is Hydrolyzed Silk vegan?
No. Hydrolyzed Silk comes from silkworms. It is not vegetarian either.
Which products contain Hydrolyzed Silk?
Open Beauty Facts finds Hydrolyzed Silk in the ingredient lists of 82 of the 22,021 products it has a list for, most often hair care and shampoos.
Products with it, by country of sale: France 20 · United States 16 · Spain 10 · Germany 9.
Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Hydrolyzed Silk turns up, not how much of the market it is.
Bravoora reads this ingredient for everyone you shop for: an allergy or intolerance, a vegan or vegetarian diet, a calorie or protein goal, and the labels on supplements and skincare too. Build a profile · For dermatologists, dietitians and doctors
Sources
The job, the description and the EU annex entry are CosIng’s; the fragrance allergens are the EU Annex III names Bravoora’s label checker reads; the product counts are Open Beauty Facts’.
- European Commission: CosIng cosmetic ingredient database (functions, description, EU annex entry)
- Open Beauty Facts: product database, 77,506 products, read 13 October 2026, ODbL
Contains information from Open Beauty Facts, which is made available here under the Open Database License (ODbL). Read the licence · Download this dictionary’s data · How we check
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