Carbomer Interpolymer Type A
Carbomer Interpolymer Type A
CAR
9/10
Concern level
High concern
A high-molecular-weight, crosslinked acrylic polymer used primarily as a rheology modifier, thickener, and gel former. In skincare and OTC topical products it helps create clear, stable gels and improves suspension, spreadability, and texture. It is generally considered an inactive support ingredient rather than a skin-active treatment ingredient.
Pore-clogging
Non-comedogenic
Pregnancy
Safe
Regulatory
No data
Benefits
Improves Texture
Chemical Properties
pH Range
4.00 - 12.00Typical Concentration
0.10% - 1.00%CAS Number: 9007-20-9
Skin Type Compatibility
dry skin8/10
oily skin10/10
sensitive skin9/10
acne prone10/10
mature skin8/10
normal skin10/10
Interactions
incompatible with: strong electrolytes may reduce viscosity, very low or very high pH can alter gel performance, insufficient neutralization prevents full thickening
Risks & Warnings
Low risk overall. Potential issues are mainly formulation-related: insufficient neutralization can reduce viscosity, and incompatible electrolytes or extreme pH may destabilize the gel. Rare mild irritation can occur in very sensitive skin, usually due to the finished formula rather than the polymer itself.
Vegan Cruelty-Free
