Red 7 Lake
Synthetic
Colorant
Not Clean
Red 7 Lake is a cosmetic ingredient.
Formula
C22H14N4Na2O7S2
Mol. Weight
556.5
CAS #
5281-04-9 (for the base dye)
Form
Powder
Functions
Cosmetic Colorant
Gives the product its color. Purely aesthetic — makes the formula look good in the jar but does nothing for your skin.
Adds Color
Traditional Use
Red 7 Lake is a synthetic colorant developed in the 20th century from azo dyes. It was created to provide stable, consistent color in cosmetics and was approved for use in cosmetic formulations by regulatory agencies.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR