Castoryl Maleate ●
TL;DR. This ingredient is primarily used as a film-former and emollient, helping pigments and waxy phases spread evenly while adding gloss and adhesion in color cosmetics.
What does Castoryl Maleate do in a cosmetic formula?
This ingredient is primarily used as a film-former and emollient, helping pigments and waxy phases spread evenly while adding gloss and adhesion in color cosmetics.
Is Castoryl Maleate clean?
From a clean-beauty perspective, it is generally a low-profile ingredient with limited irritation concerns when well purified. The main scrutiny is its synthetic modification and potential residual processing impurities rather than routine consumer-use issues.
Is Castoryl Maleate sustainable?
This material is partly plant-derived because its fatty portion comes from a crop-based oil, but the added acid component is typically petrochemical or synthetic. It is expected to be more biodegradable than silicone or fluorinated film-formers, though full environmental data are limited.
Is Castoryl Maleate COSMOS-approved?
It has partial alignment with COSMOS and Green Chemistry because it uses a renewable lipid feedstock and conventional ester chemistry, but it may not be broadly accepted for COSMOS-organic formulas depending on the grade and manufacturing route. Its fit is stronger when residual reactants are tightly controlled and renewable content is documented.
How does Castoryl Maleate work chemically?
The molecule is a modified triglyceride ester with long-chain hydroxy fatty acid character plus unsaturated dicarboxylic functionality, which gives it film-forming, pigment-wetting, and plasticizing behavior. It is oil-soluble, used mainly in anhydrous or low-water systems, and can be sensitive to oxidation like other unsaturated lipid derivatives, so antioxidant support and air-light control are common formulation considerations.
Last updated 2026-05-13