Polyisobutene is a synthetic polymer used as an emollient and skin-conditioning agent in moisturizers and creams. It forms a protective layer on the skin that helps lock in moisture and improve texture.
Benefits
Reduces water loss from skin (by up to 33% in studies)
Improves skin hydration and moisturization
Enhances skin texture and smoothness
Long-lasting moisturizing effect
Pleasant, non-greasy feel on skin
Science: Clinical research shows hydrogenated polyisobutene significantly increases skin moisture content and reduces transepidermal water loss, with effects maintained for at least 6 hours. It performed 5-10% better than comparable emollient esters in moisturization studies, suggesting strong efficacy with minimal irritation potential.
Cellulose gum (also called carboxymethyl cellulose or CMC) is a natural thickener derived from plant cellulose. In skincare products, it creates a smooth texture, helps formulas spread evenly, and can form a light protective film on the skin's surface.
Benefits
Improves product texture and spreadability
Provides light film-forming properties for a polished feel
Generally well-tolerated by most skin types
Natural origin and biodegradable
Potential concerns
May occasionally cause irritation in very sensitive skin
Can feel sticky or heavy at high concentrations
Science: Cellulose gum is recognized as a safe, biocompatible polysaccharide widely used across food, cosmetic, and pharmaceutical industries. No significant safety concerns were identified in the available literature for cosmetic applications.
