Constitutes approximately 13% of all amino acids in collagen. Vegan flag 'Depends on source' - can be fermented/synthetic, but is also commonly derived from animal collagen hydrolysis. Excellent safety profile.
Function & Common Use
Skin conditioning / Humectant / Collagen marker and support
Amino Acid
Anti-ageing serums, collagen-boosting moisturisers, skin repair products
Natural / Biotechnology
Concentration Limits
No limit
No specific maximum
No specific maximum
No limit
Pregnancy: No specific restriction identified
Frequently Asked Questions
Is Hydroxyproline safe to use in skincare?
Hydroxyproline has a Low concern rating from The Clean Sheet. Constitutes approximately 13% of all amino acids in collagen. Vegan flag 'Depends on source' - can be fermented/synthetic, but is also commonly derived from animal collagen hydrolysis. Excellent safety profile.
Is Hydroxyproline allowed in India?
Hydroxyproline is currently classified as "Permitted; amino acids are generally recognised as safe under Cosmetics Rules 2020; no restriction" under Indian cosmetics regulations. No concentration limit is specified for India.
What is Hydroxyproline used for in cosmetics?
Hydroxyproline functions as: Skin conditioning / Humectant / Collagen marker and support. It is commonly found in: Anti-ageing serums, collagen-boosting moisturisers, skin repair products.
Can Hydroxyproline cause an allergic reaction?
Yes. Hydroxyproline has an allergen flag (None identified). If you have sensitive skin or known fragrance/contact allergies, patch-test products containing this ingredient before full use.
Regulatory Status
EU Annex: None
Identifiers
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