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| Catalog Number | CI-SC-0060 |
| Product Name | Polyhydroxystearic Acid |
| CAS | 58128-22-6 |
| Description | Solid wax that is naturally derived from castor oil. Acts as a texturing agent, wax, thickener and film former. Warm to use. Melting point 50-70oC (122-158F). Saponification Value 90-125mg KOH/g. |
| Solubility | Water-insoluble, oil soluble |
| Appearance | Light tan to brown paste |
| Application | Acts also as film-former, emulsion stabilizer, sunscreen enhancer, and plasticizer Creams, lotions, gels, sunscreens, color cosmetics (e.g. eye shadow). |
| Storage | Store in a closed container at a dry place at room temperature |
| Composition | Polyhydroxystearic acid |
| Features And Benefits | Solid waxy thickener, providing consistency and emolliency to lotions and creams but also color cosmetics |
| GMO | GMO-free |
| HS Code | 3505100000 |
| INCI | Polyhydroxystearic acid |
| Manufacture | Polyhydroxystearic acid is a polymer of hydroxystearic acid obtained from castor oil. |
| Preservation | Preservative-free |
| Purity Grade | No purity grade applicable |
| Raw Material Source | Starting material are castor beans |
| Uses | Great oil-gelling agent |
Polyhydroxystearic Acid, a polymer derived from 12-hydroxystearic acid and obtained from natural sources like castor oil, is a versatile ingredient used extensively in skincare formulations. In its viscous liquid form at ambient temperatures, this all-vegetable-derived substance serves multiple functions, including acting as a dispersant for pigments and UV-reflective minerals, emulsifying, thickening, and forming films. It enhances the consistency and sensory qualities of formulations, offering creamy textures and gel-like thickness in oil-based products. In sunscreens and decorative cosmetics, Polyhydroxystearic Acid ensures even distribution and effective coating of pigments and minerals such as titanium and zinc oxides, without imparting a sticky or greasy texture. It effectively manages viscosity to accommodate various product formats, from pasty creams to liquid lotions and aerosols. Its beneficial gloss and solubility characteristics make it ideal for use in color cosmetics. Additionally, Polyhydroxystearic Acid is capable of complexing water via hydrogen bonding on the skin surface to retain moisture, and it has been validated as a safe, chemically inert ingredient by the Cosmetic Ingredient Review panel in 2022.
What are some of the roles of polyhydroxystearic acid in cosmetic formulas?
The roles of polyhydroxystearic acid in cosmetic formulas include functioning as a suspending agent, emulsion stabilizer, film-former, and texture-enhancing thickener.
How is polyhydroxystearic acid commonly used in sunscreen?
Polyhydroxystearic acid is often used to coat mineral sunscreen actives to help them disperse evenly. It can also help increase UV absorption and reduce the white cast left behind by titanium dioxide and zinc oxide.
What is the source of polyhydroxystearic acid?
Polyhydroxystearic acid is derived from castor oil.
How does polyhydroxystearic acid help distribute makeup pigments?
Polyhydroxystearic acid helps makeup pigments distribute more cohesively.
What is the appearance of polyhydroxystearic acid?
Polyhydroxystearic acid is described as a soft, pliable wax that is light tan to brown in color.
What are the benefits of polyhydroxystearic acid as an emollient?
As an emollient, polyhydroxystearic acid fills up the gaps in between dead cells in the skin, making it appear soft and smoother. It also forms a barrier to protect the skin from allergens, bacteria, and irritants, preventing dryness and itchiness.
What are the uses of polyhydroxystearic acid in addition to creams and lotions?
Polyhydroxystearic acid can also be used in sun care products, such as sunscreens, to coat oxide particles and improve dispersion and effectiveness.
What does polyhydroxystearic acid do as a film-forming agent?
As a film-forming agent, polyhydroxystearic acid forms a thin film on the surface of the skin, providing a barrier and protecting the skin from external factors.
Is polyhydroxystearic acid considered safe for use in cosmetics?
Yes, polyhydroxystearic acid is considered safe for use in cosmetics and personal care products. It has a low risk of causing cancer, allergies, immunotoxicity, and other toxic effects.
What is the origin of polyhydroxystearic acid?
Polyhydroxystearic acid is a polymer of hydroxystearic acid obtained from castor oil.
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