Formulation

Sun care: UV-A & B Very Water-Resistant Sunscreen Lotion (SPF-20)

Supplied ByLubrizol -Last Updated on Feb 19, 2021

This sunscreen lotion provides long-lasting UV protection. Both Avalure™* UR 450 Polymer and Pemulen®* TR-2 Polymer deliver optimal water-resistant properties.Avobenzone, an UVA absorber, is included in this formulation. Schercemol™* 1688 Ester mitigates the oily feel of the various UV absorbers, while SilSense™* Copolyol-1 Silicone, a water soluble silicone, improves skin feel and detackifies the formulation. Carbopol®* Ultrez 21 Polymer delivers easy, efficient thickening and emulsion stabilization with a smooth, non-tacky afterfeel. Promulgen™* D Emulsifier, a highly cost effective non-ionic emulsifier, acts as an emulsion stabilizer and viscosity builder.

Typical formulation ingredients

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End consumer benefits

Water-Resistant / Waterproof

Applications

Sub-applications

Sunscreens

Application formats

Cream |
Gel |
Lotion
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Typical properties

Appearance White, creamy emulsion pH 7.0 – 7.5 Viscosity (mPa·s)** 18,000 – 26,000 Yield Value (dyn / cm2) 1,200 – 2,000 SPF***: Static: 33.9 SPF***: Very Water resistant (after 80 minutes immersion) 22.6 Stability: Passed 3 months @ 45°C, 5 cycles freeze/thaw ** Brookfield RVT @ 25°C, 20 rpm, Spindle #6, measured after 24 hours *** SPF determined by In Vitro testing using the Labsphere® UV-1000 UV Analyzer

Procedure

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