Science
Mechanism of Action
This copolymer creates a cohesive, flexible matrix on the skin's surface that acts as both a pressure-sensitive adhesive and an occlusive barrier. By forming a non-polar film, it effectively anchors active pigments or hair-removal waxes to the surface while preventing trans-epidermal water loss through its hydrophobic nature.
Research
Clinical Evidence
Medium confidence20%
Key findings
- 01 Evaluation of adhesive compositions in eyelash applications demonstrated high tack and flexible film properties without inducing skin irritation at 1-20%.
- 02 HET-CAM testing on 30-60% concentrations in depilatory systems yielded a 'mild' irritation score of <1.5, confirming high biocompatibility at high loads.
Transparency
Dusting Analysis
Because this is a functional resin rather than a bio-active ingredient, 'dusting' is rarely an issue; it is either used at functional levels for adhesion (1%+) or not at all. A concentration below 0.5% would likely fail to provide the intended film-forming benefits.
The Formula
Formulation
Stability
Exceptional thermal and chemical stability; it is non-reactive to pH fluctuations and is ideal for anhydrous (water-free) formulations.
Synergies
- Non-polar hydrocarbons
- Synthetic waxes
- Mineral pigments
Conflicts
- Water
- Polar alcohols
Safety
Safety Profile
Safety is attributed to its large molecular weight, which prevents systemic absorption through the skin barrier. EWG hazard score is 1.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An essential high-performance tackifier for long-wear and adhesive cosmetics, offering excellent safety and durability without irritation.
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References
Sources