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
Permitted silicone polymer with negligible absorption and low sensitization potential; environmental persistence and bioaccumulation warrant monitoring despite favorable safety profile for dermal use.
Frequently Asked Questions
Is Polysilicone-21 safe in cosmetics?
Permitted silicone polymer with negligible absorption and low sensitization potential; environmental persistence and bioaccumulation warrant monitoring despite favorable safety profile for dermal use. The EU classifies Polysilicone-21 as "permitted". Safety rating: GOOD.
Is Polysilicone-21 allowed in the EU?
Polysilicone-21 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Polysilicone-21 do in cosmetics?
Polysilicone-21 functions as: Viscosity controlling, texture modifier. It is classified as a cosmetic ingredient in our database. CAS number: Not publicly assigned in available databases.
What is the Margin of Safety for Polysilicone-21?
not established 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 Polysilicone-21 compliance across multiple jurisdictions:
Related Ingredients
Is Polysilicone-21 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 Polysilicone-21 in your formulation.