This light and non-greasy sunscreen cream, free from Octinoxate, Oxybenzone, ethanol and volatile silicones, apply to wet skin without whitening. Multifunctional cold-process Olivem® 2020 is the only emulsifier used. HallBrite® BHB provides sunscreen solvency and emolliency. In vitro testing suggested SPF ~32, PFA (PPD) ~12 performance with critical wavelength = 378 nm. In vivo testing (5 subjects) yielded static SPF 39 in a US laboratory, with 80-minute water resistant SPF 38.
Sequence | Trade Name | INCI Name | % | ||
A | Ethylhexyl Salicylate [Octisalate] | 5.0 | |||
Octocrylene [Octocrilene] | 10.0 | ||||
Homosalate [Homosalate] | 10.0 | ||||
|
|
5.0 | |||
SENSOLENE® | Ethylhexyl Olivate | 2.0 | |||
OLIVEM® 2020 | Ethylhexyl Olivate, Sodium Acrylates Copolymer, Polyglyceryl-4 Olivate | 2.0 | |||
Acrylates/Dimethicone Copolymer | 2.0 | ||||
B | Butyl Methoxydibenzoylmethane [Avobenzone] | 3.0 | |||
C | Water | up to 100 | |||
Glycerin | 8.0 | ||||
D | Preservative | a.n. | |||
|
0.05 |
PREPARATIVE PROCEDURE
1 To a secondary vessel add phase A and start mixing. Add phase B and heat to 55°C. Stop heating after all solids have dissolved. 2 To the main vessel add phase C, start mixing and then add phase D items. 3 When both phases are homogeneous slowly add phase AB to phase CD with prop mixing. 4 When the emulsion is fully formed (white and thickened; 20 minutes or longer, as necessary), continue mixing until batch is smooth.
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