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
In vitro mutagenicity positive in Ames test but in vivo studies consistently negative; EFSA and WHO/JECFA concluded no genotoxic concern in vivo. Photodegradable and may form pro-oxidant quinone metabolites at very high concentrations. Formulation stability requires attention due to oxidation sensitivity.
Frequently Asked Questions
Is Quercetin Dihydrate safe in cosmetics?
In vitro mutagenicity positive in Ames test but in vivo studies consistently negative; EFSA and WHO/JECFA concluded no genotoxic concern in vivo. Photodegradable and may form pro-oxidant quinone metabolites at very high concentrations. Formulation stability requires attention due to oxidation sensitivity. The EU classifies Quercetin Dihydrate as "permitted". Safety rating: GOOD.
Is Quercetin Dihydrate allowed in the EU?
Quercetin Dihydrate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Quercetin Dihydrate do in cosmetics?
Quercetin Dihydrate functions as: Antioxidant, skin conditioning, UV absorber, anti-inflammatory. It is classified as a cosmetic ingredient in our database. CAS number: 6151-25-3.
What is the Margin of Safety for Quercetin Dihydrate?
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 Quercetin Dihydrate compliance across multiple jurisdictions:
Related Ingredients
Is Quercetin Dihydrate 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 Quercetin Dihydrate in your formulation.