Product Description
Steareth-21 is a polyethylene glycol (PEG)-based surfactant and emulsifier derived from stearyl alcohol through ethoxylation. Chemically, it is a long-chain polyether alcohol with the formula C₁₈H₃₇(OCH₂CH₂)₂₁OH, where n ≈ 21, giving it both hydrophilic (PEG chain) and lipophilic properties. As a non-ionic surfactant, it exhibits high stability in various pH ranges and is valued for its emulsifying, thickening, and solubilizing capabilities in cosmetic formulations.
Steareth-21 is a trusted non-ionic emulsifier that delivers exceptional stability and texture in oil-in-water (O/W) cosmetic formulations. With its high HLB value (~15.5), it is ideal for creating lightweight, non-greasy lotions, creams, and serums that absorb quickly while maintaining superior emulsion stability.
As a key ingredient in skincare, suncare, and makeup products, Steareth-21 ensures smooth blending of oil and water phases, enhancing product spreadability and shelf life. Its excellent compatibility with a wide range of cosmetic actives makes it a versatile choice for formulators seeking reliable performance. Developed for sensitive skin-friendly formulations, it is rigorously tested for purity and safety, meeting global cosmetic standards.
Benefits
Stable Emulsions
Creates stable O/W emulsions.
Lightweight
Delivers lightweight, fast-absorbing textures.
Compatible
Compatible with most cosmetic ingredients.
Gentle
Suitable for sensitive skin formulations.
Usage Information
- ✨ Appearance: Appears as a white to off-white wax or solid, soluble in hot water and oils.
- ✨ Concentration: Typical concentration: 0.5–5% in emulsions; higher doses (up to 10%) for thickening or solubilization.
Applications
It is commonly used in anti-aging creams and sunscreen lotions.
Skincare Products: Emulsifies oil-based UV filters in water phases, ensuring uniform distribution.
Cleansing Products: Aids in oil removal without excessive drying, often combined with mild surfactants.
Haircare Products: Thickens products while smoothing hair cuticles, reducing frizz and static.
Color Cosmetics: Stabilizes pigment dispersions and improves product adhesion to the skin.
Storage & Specifications
Storage
Closed container at dry place, room temperature.
Cruelty Free
Not animal tested
Vegan
No animal-derived components
GMO
No GMO data available
Frequently Asked Questions
Q1: What exactly is Steareth-21?
A: Steareth-21 is a non-ionic surfactant and emulsifier derived from stearyl alcohol. It is widely used in cosmetics to stabilize oil-in-water emulsions.
Q2: What is the HLB value of Steareth-21 and why does it matter?
A: It has a high HLB value of approximately 15.5. High HLB values indicate that the ingredient is more water-soluble, making it an excellent choice for oil-in-water (O/W) emulsions.
Q3: Can Steareth-21 be used in sensitive skin products?
A: Yes, Steareth-21 is highly compatible with a variety of cosmetic ingredients and is suitable for formulations intended for sensitive skin.
Q4: What is the recommended usage concentration in formulations?
A: For most emulsions, a concentration of 0.5–5% is recommended. For specific thickening or solubilizing requirements, it can be used at up to 10%.
Q5: Is Steareth-21 a vegan-friendly ingredient?
A: Yes, this product does not contain any animal-derived components and is suitable for vegan cosmetic formulations.
Q6: How should Steareth-21 be stored to maintain quality?
A: It should be stored in a tightly closed container in a dry environment at room temperature to ensure its stability and performance.
Aogebio Cosmetic
