Science
Mechanism of Action
This modified chitosan derivative primarily works by creating a breathable, invisible film on the skin's surface. This film effectively reduces transepidermal water loss (TEWL), thereby absorbing and retaining moisture to maintain optimal skin hydration and alleviate dryness. Furthermore, it demonstrates utility as a carrier for other active ingredients. Its parent molecule, chitosan, suggests potential for additional benefits such as interaction with bacterial cell walls, support for wound healing via network formation, stimulation of collagen synthesis, and antioxidant, cleansing, and protective attributes.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
A key advantage of Hydroxypropyl Chitosan over unmodified chitosan is its solubility across a full pH range of 1 to 13, provided it has a degree of substitution (DS) of 0.40 or higher. This characteristic significantly broadens its applicability in diverse formulations and makes it suitable for creating stable gel and hydrogel products due to its favorable viscosity properties.
Synergies
- Functions as an effective carrier for beneficial active ingredients, enhancing their delivery.
Conflicts
- Divalent cations (e.g., from dicalcium phosphate dihydrate, calcium carbonate, and magnesium stearate), which can form coordination complexes with its amino groups (inferred from chitosan properties).
- Anionic surfactants, with which it can form complexes, potentially altering surface-active properties.
Safety
Safety Profile
Hydroxypropyl Chitosan is rated with a low-risk score of 1, indicating its safety for use in cosmetic and skincare products. It shares a high degree of safety and natural biodegradability within the body, similar to its parent compound, chitosan. Chitosan itself is approved for cosmetic use by the FDA and the EU, and is not listed as a restricted substance. No specific SCCS opinion directly addressing Hydroxypropyl Chitosan was found in the available research.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Hydroxypropyl Chitosan is a valuable, multi-functional ingredient offering broad pH stability, effective skin hydration through film formation, and excellent compatibility across all skin types with a low risk of irritation or comedogenicity.
Related
Similar Ingredients
Finding similar ingredients…