Polyquaternium-39
Cationic polymer. Conditions skin and hair, forms a light film, safe.
Supporting ingredient
It gives a product its texture, stability or shelf life. It has no claimed effect on the skin, so an efficacy tier does not apply. What is known about its safety is below
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Oily, Combination, Sensitive
About this ingredient
Polyquaternium-39 (PQ-39) is a cationic polymer. Conditions skin and hair, forms a light film, reduces surfactant-related irritation in cleansers. Where applied. Shampoos, conditioners, shower gels, micellar water, hair products (0.1-2%). Safety. CIR confirmed polyquaternium safety. Hypoallergenic, non-irritating. No systemic absorption through intact skin. Pregnancy and lactation – safe.
Frequently asked questions
Is Polyquaternium-39 safe during pregnancy?
Polyquaternium-39 is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Polyquaternium-39 for?
Polyquaternium-39 suits: normal, dry, oily, combination, sensitive.
What is Polyquaternium-39 and what does it do in cosmetics?
Cationic polymer.
What's the INCI name for Polyquaternium-39?
The INCI name is Polyquaternium-39. It may also appear as: PQ-39.
See Polyquaternium-39 in a product composition right on the store page
The Evigrade extension adds an evidence panel to iHerb, Sephora, Druni and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.
Similar role in the formula
Other functional ingredients
Polyquaternium-47, Polyquaternium-67, Polyquaternium-7, Polysilicone-11, Stearamidopropyl Dimethylamine, C13-16 Isoalkane, Distarch Phosphate, Nitrocellulose
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