Question 1

What does Polyquaternium-71 do in a cosmetic formula?

Accepted Answer

This ingredient is primarily a cationic conditioning polymer used in hair care and some skin-care formats. It helps reduce combing friction, improve slip, control flyaways, and leave a light film on hair or skin.

Question 2

Is Polyquaternium-71 clean?

Accepted Answer

From a clean-beauty perspective, this ingredient has friction because it is a synthetic cationic polymer with limited biodegradability data and potential aquatic persistence concerns. Skin irritation is usually low at cosmetic use levels, but clean frameworks often scrutinize this material class more for environmental profile than direct user tolerance.

Question 3

Is Polyquaternium-71 sustainable?

Accepted Answer

This material is generally petrochemical-derived and is not considered readily biodegradable. Its positive charge promotes deposition onto hair and wastewater solids, which can reduce free water concentration but does not make the polymer inherently circular or renewable.

Question 4

Is Polyquaternium-71 COSMOS-approved?

Accepted Answer

This ingredient is not aligned with COSMOS-natural or COSMOS-organic expectations for naturally derived, biodegradable materials. From a Green Chemistry lens, its synthetic origin, limited biodegradability, and persistence concerns make it a poor fit despite its efficient performance at low levels.

Question 5

How does Polyquaternium-71 work chemically?

Accepted Answer

The molecule is a high molecular weight, positively charged polymer designed to bind to negatively charged hair surfaces and form a conditioning film. It is typically used at low levels, often around 0.1% to 2% active depending on format, and its permanent charge gives broad pH stability while requiring compatibility checks in strongly anionic or high-electrolyte systems.