Starch Hydroxypropyltrimonium Chloride ●
TL;DR. It is a cationic conditioning polymer used to improve wet combing, reduce static, add slip, and help conditioning agents deposit onto hair and skin. It can also add a light, soft feel and modest viscosity support in rinse-off systems.
What does Starch Hydroxypropyltrimonium Chloride do in a cosmetic formula?
It is a cationic conditioning polymer used to improve wet combing, reduce static, add slip, and help conditioning agents deposit onto hair and skin. It can also add a light, soft feel and modest viscosity support in rinse-off systems.
Is Starch Hydroxypropyltrimonium Chloride clean?
From a clean-beauty perspective, it is generally well tolerated, but it gets some scrutiny because the positive-charge modification is synthetic and supplier quality matters. Strong specifications should control residual chlorinated reagents and other processing impurities.
Is Starch Hydroxypropyltrimonium Chloride sustainable?
It is based on a renewable plant polysaccharide backbone and is expected to biodegrade more readily than many fully synthetic conditioning polymers. The sustainability caveat is the added synthetic cationic chemistry, which brings petrochemical input and salt byproducts into the manufacturing footprint.
Is Starch Hydroxypropyltrimonium Chloride COSMOS-approved?
COSMOS alignment is supplier-dependent: this type of chemically modified natural polymer may be acceptable for COSMOS-natural when the feedstock, reaction route, and impurity profile meet the standard, but it is not a simple fit for COSMOS-organic claims. Its Green Chemistry profile is mixed, with a renewable backbone and useful biodegradability balanced against synthetic quaternization chemistry.
How does Starch Hydroxypropyltrimonium Chloride work chemically?
The molecule is a plant-polysaccharide ether carrying permanent positively charged trialkylammonium groups with it counterions, which makes it substantive to negatively charged hair and skin surfaces. Typical use is about 0.1% to 2% in shampoos, conditioners, and cleansers, and it is broadly stable across common cosmetic pH ranges while requiring compatibility checks with strongly anionic systems.
Last updated 2026-05-13