Polysilicone-29 ●
TL;DR. This ingredient is primarily a silicone-based film-former used to improve water resistance, slip, wear, and conditioning feel in skin, makeup, sunscreen, and hair formulas.
What does Polysilicone-29 do in a cosmetic formula?
This ingredient is primarily a silicone-based film-former used to improve water resistance, slip, wear, and conditioning feel in skin, makeup, sunscreen, and hair formulas.
Is Polysilicone-29 clean?
From a clean-beauty perspective, it has friction because it is a synthetic silicone polymer with limited natural-standard alignment. It is generally low-irritation on skin, but its main concern is standards-based, not acute tolerance.
Is Polysilicone-29 sustainable?
This material is synthetically produced from silicon chemistry and petrochemical-derived organic groups rather than renewable agricultural feedstocks. It is not considered readily biodegradable, so the sustainability profile is weaker than plant-derived or readily degradable film-formers.
Is Polysilicone-29 COSMOS-approved?
It is not aligned with COSMOS-natural or COSMOS-organic standards because synthetic organosilicone polymers are generally not permitted. Its Green Chemistry fit is limited by non-renewable inputs and environmental persistence, even though it can help formulas perform at relatively low use levels.
How does Polysilicone-29 work chemically?
The molecule is a high-molecular-weight organosiloxane polymer with a silicon-oxygen backbone and organic side groups that create a flexible, hydrophobic film. It is typically used in low single-digit percentages to higher levels when water resistance or long wear is needed, and it is broadly stable across normal cosmetic pH ranges because it does not oxidize like unsaturated oils.
Last updated 2026-05-13