Science
Mechanism of Action
This ingredient operates as a highly effective humectant, actively attracting and retaining water to boost the skin's moisture content. Its cationic nature imparts a positive charge, enabling it to neutralize negative charges on the skin surface. This interaction contributes to lasting hydration and improved skin texture, helping to maintain the skin in optimal condition.
Research
Clinical Evidence
Medium confidence5%
Key findings
- 01 Efficacy trials, specifically conducted on the related compound Hydroxypropyl Bis-Hydroxyethyldimonium Chloride, demonstrate its potent humectant capabilities. At concentrations between 0.1% and 5.0%, it proved more efficient at moisturizing than Glycerin, Sodium PCA, Sodium Lactate, and Urea. When incorporated into lotion formulations, it increased skin hydration for 8 to 24 hours. Similar moisturizing benefits were observed in wash-off products such as facial cleansers. A concentration of 5% is identified as an optimal dosage.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient is readily soluble in the water phase of formulations and exhibits good heat tolerance. However, it is advisable to avoid prolonged exposure to temperatures above 80°C to maintain stability.
Safety
Safety Profile
General safety assessments for products containing Hydroxypropyl Bisstearyldimonium Chloride indicate a low likelihood of skin irritation from prolonged or repeated use, and no expected photo-toxic effects. While it may contain very low levels of substances capable of causing allergic reactions, these concentrations are typically insufficient to pose a risk to the general population. However, individuals already sensitized might experience adverse reactions. It is considered unlikely to produce systemic toxicity through skin contact, though it may cause slight, transient eye irritation. EWG's Skin Deep database lists low concerns for neurotoxicity, endocrine disruption, developmental/reproductive toxicity, and use restrictions for Hydroxypropyl Bisstearyldimonium Chloride, with low-moderate concerns for allergies/immunotoxicity. For the related Hydroxypropyl Bis-Hydroxyethyldimonium Chloride, EWG notes low concerns across cancer, allergies/immunotoxicity, developmental/reproductive toxicity, and use restrictions.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Hydroxypropyl Bisstearyldimonium Chloride is a valuable humectant and skin conditioning agent, with compelling evidence from a related compound indicating superior moisturizing efficacy and broad compatibility across skin types.
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References
Sources