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Broad Spectrum SPF 18.6 Sunscreen Cream



Published January 1, 2010
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Phase A
Dow Corning 345 Fluid (Dow Corning) (Cyclopentasiloxane, cyclohexasiloxane)
4.00
Velvesil 125 (Momentive) (Cyclopentasiloxane, C30-45 alkyl cetearyl dimethicone crosspolymer)
4.50
Versene NA (Dow Chemical) (Disodium EDTA)
0.10
Mikrokill COS (Arch Chemicals) (Phenoxyethanol, caprylyl glycol, chlorphenesin)
1.00
HallBrite HS USP (HallStar) (Homosalate [homosalate])
7.50
HallBrite OS USP (HallStar) (Ethylhexyl salicylate [octisalate])
5.00
SolaStay S1 (HallStar) (Ethylhexyl methoxycrylene)
6.00
HallStar TA-1618 (HallStar) (Cetearyl alcohol)
0.35
Ganex V-220 (ISP) (VP/eicosene copolymer)
1.00
Emulsiphos (Symrise) (Potassium cetyl phosphate, hydrogenated palm glycerides)
3.00

Phase B
Water deionized
50.05

Phase C
Superol K, Glycerine 99.7% USP/FCC Kosher (P&G Chemicals) (glycerin)
4.00

Phase D
X-Tend 226 (ISP) (Phenethyl benzoate)
5.00

Phase E
Parsol 1789 (DSM Nutritional) (Butyl methoxydibenzoylmethane [avobenzone])
3.00

Phase F
HallStar GMS SE/AS (HallStar) (Glyceryl stearate, PEG-100 stearate)
1.00

Phase G
Simulgel 600 (Seppic) (Acrylamide/sodium acryloyldimethyltaurate copolymer, isohexadecane, polysorbate 80
2.50

Phase H
MSS-500W (Kobo Products) (Silica)
2.00

Procedure
In a suitably rated vessel, premix phase A until homogeneous and smooth, then set aside for later use. Meanwhile add phase B to main vessel, commence center-stir (prop) mixing, start heating to 85°C, and add premixed phase C. To a third vessel add phase D, start mixing, add phase E and, when dissolved, heat to 85°C, then add phase F in order. With both phases at 85°C and homogeneous, add oil phase DEF to water phase BC with stirring and stop heating. After mixing for 10 minutes, homogenize until batch reaches 55°C and then resume sweep mixing while cooling. At 50°C or lower add phase G and when smooth add phase A. When again smooth, add phase H, replace any water lost to evaporation, and mix until smooth. When at desired filling temperature, stop cooling and mixing, perform final quality assurance checks and package product.

Properties
 Appearance—Light yellow cream; pH—6.4; Viscosity (RV, T-D, 5, 20 & 100 rpm, cP)—92000, 28000 & 7320.

More Information
The HallStar Company, Tel: (877) 427-4255, (312) 385-4494; Website: www.hallstar.com


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