Science
Mechanism of Action
This ingredient, a derivative of silicone, functions by forming a vapor-permeable film on the skin's surface. This film acts as an occlusive barrier, which is critical for sealing in moisture and thereby preventing transepidermal water loss. Through this action, it significantly contributes to skin softening and smoothing. Furthermore, it imparts a desirable slip, and can temporarily diminish the appearance of fine lines and crevices, leading to a more supple and plump complexion.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Optimal formulation stability for related dimethicone derivatives, such as PEG-8 dimethicone, is observed within a functional pH range of 5.5 to 8.5.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has assessed dimethicone and its substituted polymers, including Hydroxypropyldimethicone, concluding they are safe for use in cosmetic products when appropriately formulated to be non-irritating. This safety assessment was re-confirmed, with the caveat that data were deemed insufficient for products potentially inhaled via airbrush devices. Maximum use concentrations for general Dimethicone in dermal products have been reported up to 85%. Dimethicone also possesses applications in food and over-the-counter topical drugs.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Hydroxypropyl Dimethicone Isostearate is a valuable ingredient that significantly enhances skin hydration, texture, and visual plumpness, boasting a strong safety profile and broad skin compatibility across all types.
Related
Similar Ingredients
Finding similar ingredients…