Methacryloyloxypropyl Polysilsesquioxane
INCI: METHACRYLOYLOXYPROPYL POLYSILSESQUIOXANE (LISTED IN COSING)
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
Low systemic toxicity; inorganic-organic hybrid material with high thermal stability; potential for occlusion at high concentrations. Polysilsesquioxane (PSSQ) has a cage-like (T8) or ladder siloxane backbone with the empirical formula (RSiO₁.₅)ₙ, providing hardness, thermal stability, and optical clarity superior to linear silicones. The methacrylate group enables UV or radical curing into durable, breathable films with excellent light-scattering properties for soft-focus effects.
Frequently Asked Questions
Is Methacryloyloxypropyl Polysilsesquioxane safe in cosmetics?
Low systemic toxicity; inorganic-organic hybrid material with high thermal stability; potential for occlusion at high concentrations. Polysilsesquioxane (PSSQ) has a cage-like (T8) or ladder siloxane backbone with the empirical formula (RSiO₁.₅)ₙ, providing hardness, thermal stability, and optical clarity superior to linear silicones. The methacrylate group enables UV or radical curing into durable, breathable films with excellent light-scattering properties for soft-focus effects. The EU classifies Methacryloyloxypropyl Polysilsesquioxane as "prohibited". Safety rating: MODERATE.
Is Methacryloyloxypropyl Polysilsesquioxane allowed in the EU?
Methacryloyloxypropyl Polysilsesquioxane EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.
What does Methacryloyloxypropyl Polysilsesquioxane do in cosmetics?
Methacryloyloxypropyl Polysilsesquioxane functions as: Film forming, hair conditioning, skin conditioning. It is classified as a cosmetic ingredient in our database. CAS number: Not assigned a single CAS (polymeric/oligomeric silsesquioxane with methacrylate functionality; cage or ladder structure varies).
What is the Margin of Safety for Methacryloyloxypropyl Polysilsesquioxane?
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 Methacryloyloxypropyl Polysilsesquioxane compliance across multiple jurisdictions:
Related Ingredients
Is Methacryloyloxypropyl Polysilsesquioxane 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 Methacryloyloxypropyl Polysilsesquioxane in your formulation.