Science
Mechanism of Action
This ingredient functions by forming an imperceptible, continuous film on the surface of skin, acting as a physical shield against environmental stressors such as UV radiation, pollution, and chemical irritants. In cleansing formulations, POLYESTER-37 specifically mitigates the interaction between surfactants and the skin's natural lipid barrier, thereby reducing potential irritation and enhancing overall formula mildness. For hair, it acts as a polyesteramine, utilizing cationic sites and ester linkages for adhesion, forming a protective layer that conditions, adds gloss, and reduces static.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Optimal stability and performance require a pH below 6.5. This pourable liquid is suitable for cold processing and can be incorporated into clear formulations. It integrates best when added to the oil phase or pre-mixed with an amphoteric surfactant before introduction into the primary surfactant system.
Safety
Safety Profile
No specific safety assessments from CIR, SCCS, or FDA are available for POLYESTER-37. Its manufacturer suggests a use level of 0.5-2.0% for hair care applications. Independent assessments indicate a low risk profile; EWG Skin Deep rates it 'LOW' for cancer, allergies, and developmental toxicity, while SkinSAFE lists products containing it as 'Irritant Free'.
Your Skin
Skin Compatibility
Our Assessment
Verdict
POLYESTER-37 is a valuable conditioning and film-forming agent, offering protective benefits and enhancing formula mildness with a low risk of irritation or comedogenicity across all skin types.
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