Polyquaternium-63
AKA “Polyquaternium 63, PQ-63
Synthetic
Ingredient Facts
Polyquaternium-63
AKA: Polyquaternium 63, PQ-63
Synthetic · Hair Conditioning · EWG: 4
Synthetic
Skin Conditioner
Hair Care
Synthetic
Clean
Polyquaternium-63 is the polymeric quaternary ammonium salt formed by acrylamide, acrylic acid and ethyltrimonium chloride acrylate Science: Functions: Hair Conditioning, Skin Conditioning Safety Ratings: CIR: Safe as used EU Restriction: III/66
CAS #
-
See origin →
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
Traditional Use
A modern synthetic polymer used as a conditioning and film-forming agent in cosmetics. Created to enhance product performance and provide improved sensory attributes in hair and skincare products.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUpermitted
JAPANpermitted
CANADApermitted
Verified Feb 2026
Data: CosIng · EWG · CIR
Polyquaternium-63 — Duck Heart Ghost