Perfect DD Cream SPF 20
Preparation:
Disperse the Veegum Ultra and Keltrol CG SFT in Pricerine 9091 and add water with stirring. Once fully hydrated add the Solaveil™ XT-40W with stirring. Combine the Phase A ingredients with stirring. Pre-blend Phase C with a pestle and mortar and add to Phase A with stirring until homogenous. Homogenise the oil phase for three minutes to disperse the pigments fully. Add Phase A to Phase B with stirring until homogenous. Homogenise for a further three minutes. Adjust the pH with lactic acid to below 4.5 whilst stirring and add the preservative Euxyl K172. Add the Venuceane and mix until homogenous.Notes:
Appearance: Medium tan cream pH: 5.55 Viscosity: 6,520 cP +/- 10% (Spindle 3, 10 rpm, 1 minute, ambient, Brookfield DV-I+) Stability: 3 months at 45°C, 40°C, 5°C and room temperature. 1 month at -5/40°C In vivo SPF: 23 (ISO 24444:2010, 5 subjects, AMA Laboratories, USA), Label SPF 20 In vitro critical wavelength (FDA 2011 protocol, Croda): 380 nm In vitro UVAPF (COLIPA 2011 on no pigments formulation): 9, equivalent to PA+++ Ratio SPF/UVAPF: 2.55Disclaimer
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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