Red 33 <ILN39477

TL;DR. This ingredient is a synthetic colorant used to give water-based products a red to pink shade. It is mainly used for visual identity rather than skin, hair, or cleansing performance.

What does Red 33 <ILN39477 do in a cosmetic formula?

This ingredient is a synthetic colorant used to give water-based products a red to pink shade. It is mainly used for visual identity rather than skin, hair, or cleansing performance.

Is Red 33 <ILN39477 clean?

From a clean-beauty perspective, this ingredient has friction because it is a certified synthetic dye and is commonly screened by brands that limit petroleum-derived colorants. It can be well controlled through batch certification and purity limits, but it is not considered an unproblematic natural-color option.

Is Red 33 <ILN39477 sustainable?

This material is synthetically produced, typically from petrochemical feedstocks, and is not a renewable-source colorant. Azo colorants can vary in biodegradability, and wastewater color removal is a relevant environmental consideration for manufacturing and rinse-off use.

Is Red 33 <ILN39477 COSMOS-approved?

This ingredient is not permitted under COSMOS-natural or COSMOS-organic standards because it is a synthetic organic colorant outside the allowed natural and nature-derived colorant scope. Its Green Chemistry fit is weak due to nonrenewable feedstocks, multi-step synthesis, and aquatic-release considerations.

How does Red 33 <ILN39477 work chemically?

The molecule is an anionic, water-soluble monoazo dye with sulfonate groups that help it dissolve and distribute evenly in aqueous systems. It is used at very low levels for shade adjustment, and formulators typically manage pH, electrolyte load, and interactions with cationic polymers or surfactants because these can shift color strength or clarity.

Last updated 2026-05-13