Formulation

Sun Care\Baby Care: Very Water-Resistant Sunscreen Gel for the Body (SPF 25)

Supplied ByLubrizol -Last Updated on Feb 19, 2021

This lightweight sunscreen offers a surprisingly creamy/cushiony texture without the 'greasiness' of other very water-resistant SPF 25 sunscreens. This formula is also very water-resistant, and is effective against UVA and UVB radiation. Easy-dispersing Carbopol® ETD 2050 Polymer stabilizes the formula while providing long/smooth flow properties. Pemulen® TR-2 Polymer provides emulsification and stabilization of the sunscreen oils. Schercemol™ NGDO Ester provides good spreadability with high slip, and its highly branched structure is ideal for mitigating the oily feel of sun care formulations. Glucam™ E-20 and Glucam™ P-20 Humectants help to increase the water content in the top layers of the skin, while reducing the tackiness often associated with high-glycerin formulations.

Typical formulation ingredients

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Applications

Sub-applications

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Typical properties

Appearance: Creamy off-white lotion
pH: 5.5 – 5.7
Viscosity (mPa•s): 6,000 – 8,000; Brookfield RVT or DV-II @ 20 rpm, 25°C, #5 spindle, measured at 24 hours
Yield Value (dyn/cm²): 300
SPF: Static: 33
SPF: Very Water resistant (after 80 minutes immersion) 26
Stability: Passed 8 weeks @ 50°C, 5 cycles freeze/thaw

Procedure

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