Regulatory Status
For full compliance data across 55 jurisdictions, use the Substance Compliance tool.
Safety Data
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Recommended addition below 40°C in water phase; stable pH 4.5–7.5; no CIR final report specifically on cosmetic use
Frequently Asked Questions
Is Theanine safe in cosmetics?
Recommended addition below 40°C in water phase; stable pH 4.5–7.5; no CIR final report specifically on cosmetic use The EU classifies Theanine as "permitted". Safety rating: GOOD.
Is Theanine allowed in the EU?
Theanine EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Theanine do in cosmetics?
Theanine functions as: Skin Conditioning, Antioxidant. It is classified as a cosmetic ingredient in our database. CAS number: 3081-61-6.
What is the Margin of Safety for Theanine?
adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.
Compliance Tools
Check Theanine compliance across multiple jurisdictions:
Related Ingredients
Is Theanine in Your Products?
Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.
Try Piro Free →Analyze Your Full Ingredient List
Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Theanine in your formulation.