Broad Spectrum SPF ~25, PFA (PPD) ~32 Sunscreen Cream
Preparation:
In secondary vessel, combine A and start mixing. Slowly add B with continued mixing. Heat this oil phase to 80–90°C, then add phase C ingredients in order. When A–C is homogeneous, add D and mix until totally dissolved. To the main vessel, add E and start mixing. Add F and, when dissolved, add G. When fully incorporated, start heating to 80°C and add premix of H. When oil and water phases are uniform and at the defined temperatures, add the oil phase (A–D) to the water phase (E–H) with strong mixing without aeration. Start homogenizing intensively and start cooling. When the batch is at 45°C, add I and keep homogenizing intensively. Add J, homogenize until uniform, then resume sweep mixing. Add deionized water as needed to correct for evaporative losses. Continue mixing and cooling until a smooth, homogeneous lotion results and product is at the desired filling temperature. Perform final quality assurance checksNotes:
Appearance: Cream-colored soft cream Viscosity (RV, T-D, 5, 20 & 100 rpm, cP): 75000, 19200 & 5000 pH: 6.3 Stability: acceptable through three freeze thaw cycles and after 1.5 months at 45°CDisclaimer
While every effort has been made to reproduce these formulations correctly, the Publisher of this website cannot accept any liability for the information presented. All formulations are provided in good faith, but no warranty is given as to accuracy of information or results, or suitability for a particular use, nor is freedom from patent infringement to be inferred. Formulations are offered solely for consideration by the participating manufacturers. Continued use of this web site infers acceptance of this disclaimer.
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