Science
Mechanism of Action
This ingredient functions by forming a resilient film on the skin, which acts as a physical barrier. This barrier minimizes transepidermal water loss, thereby boosting skin hydration and contributing to a softer feel. Furthermore, the film provides a protective layer against external factors such as UV radiation and pollution.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyvinylalcohol Crosspolymer, a synthetic polymer of vinyl alcohol and glyoxal, is engineered with crosslinking to reduce its hydrophilic characteristics. While it swells and absorbs substantial water due to its network structure, it does not fully dissolve. Formulators should note that concentrations around 15%, particularly in peel-off products, may lead to drying and irritation.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel deemed Polyvinyl Alcohol (PVA), the parent polymer, 'safe as used' in cosmetic formulations, removing a prior tentative 13% restriction. Maximum reported use concentrations for PVA have reached up to 15%. However, specifically for Polyvinylalcohol Crosspolymer, concentrations around 15% in peel-off formulations have been observed to cause drying and irritation. It also holds Generally Recognized As Safe (GRAS) status from the FDA for specific food and pharmaceutical applications.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyvinylalcohol Crosspolymer is a valuable film-forming and bulking agent that enhances skin hydration and provides environmental protection, though concentrations around 15% warrant careful formulation to mitigate potential drying or irritation.
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