thickener
Polyquaternium-51
Generally safe·Moderate evidence
A positively charged conditioning polymer used in hair and skin products to improve texture and feel. It is graded safe by CIR and has a low incidence of reported sensitivities at typical use levels.
Products with Polyquaternium-51
- 100MisshaTime Revolution Artemisia Ampoule
- 99IsntreeReal Mugwort Clay Mask
- 96DieuxInstant Angel
- 92SomethincGentle Bright Niacinamide + Alpha Arbutin Serum
- 87OuidadAdvanced Climate Control Frizz-Fighting Hydrating Mask
- 87Luxe OrganixPremium Keratin Argan Shampoo
- 86Lab SeriesAll-In-One Defense Lotion Moisturizer SPF 35
References
Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.