Poly-L-Lysine (30000-70000 MW)
Poly-L-Lysine (30000-70000 MW)
POL
4/10
Concern level
Moderate concern
Peptide Compound
Poly-L-lysine is a high-molecular-weight cationic polymer made from the amino acid L-lysine. In cosmetics it is more often encountered as a film-forming, conditioning, or stabilization aid than as a primary skin active. The listed 30,000–70,000 MW indicates a large polymer fraction with low skin penetration potential.
Pore-clogging
Non-comedogenic
Pregnancy
Safe
Regulatory
No data
Benefits
Supports Barrier Function
Chemical Properties
Molecular Weight
30000 g/mol pH Range
4.50 - 8.00Typical Concentration
0.01% - 0.50%CAS Number: 25104-18-1
Skin Type Compatibility
dry skin4/10
oily skin4/10
sensitive skin3/10
acne prone4/10
mature skin4/10
normal skin4/10
Interactions
incompatible with: May complex with strongly anionic ingredients and reduce formula clarity or performance, Compatibility testing is advised with highly charged polymers, surfactants, and thickener systems
Risks & Warnings
Human cosmetic safety data are limited for this exact high-MW material. Potential concerns are mainly irritation from cationic polymers, especially at higher levels or on compromised skin. Avoid use on highly irritated or broken skin unless the finished product has been tested for tolerance.
Vegan Cruelty-Free
