This formulation was designed to provide broad spectrum (SPF/PFA <3) label SPF 30 performance. SolaStay® S1 provides very rapid and efficient excited state quenching of Avobenzone, protecting it from photodegradation. SolaStay® S1 also mitigates the photocatalytic and reactive oxygen species generating activities of the oxide to improve sunscreen performance. HallBrite® BHB contributes to UV filter solubility and enhances product feel. This formulation was subjected to in vitro analysis and delivered SPF ~35 (30), PFA (PPD) ~19 performance with critical wavelength 380 nm.

Sequence Trade Name INCI Name %
A SolaStay® S1* Ethylhexyl Methoxycrylene 2.00
Ethylhexyl Salicylate [Octisalate] 5.00
HALLBRITE® BHB* Butyloctyl Salicylate 5.00
C12-15 Alkyl Benzoate 10.00
B Titanium Dioxide [Titanium Dioxide], Aluminum Hydroxide (60 nm primary particle size) 3.00
C Ethylhexyl Triazone 1.50
VP/Eicosene Copolymer 1.00
Tri-C14-15 Alkyl Citrate 1.50
Ceteareth-25, Disodium Ethylene Dicocamide PEG-15 Disulfate 3.00
D Butyl Methoxydibenzoylmethane [Avobenzone] 2.40
E Water (Aqua) (deionized) Up to 100
Glycerin 4.00
Disodium EDTA 0.05
Xanthan Gum (pharma grade) 0.20
F Preservative a.n.
G Water (Aqua) (deionized) 9.60
Microcrystalline Cellulose, Cellulose Gum 0.40
H Cyclopentasiloxane 2.50
Aluminum Starch Octenylsuccinate 1.50

Formula No. JZ8-175


1. To a secondary vessel add phase A, start mixing, add phase B to phase A, and heat phase AB to 70°C.
2. Add phase C ingredients to phase AB with continued mixing, then, add phase D to phase ABC and mix
until completely dissolved.
3. Add liquids from phase E to the main vessel, dissolve Disodium EDTA, then add Xanthan Gum and mix
until fully incorporated.
4. Start heating phase E to 70°C.
5. With both phases are homogeneous and at temperature, add oil phase ABCD to water phase E with
6. After mixing for five minutes, start cooling and homogenize until batch reaches 55°C (or 3 minutes),
then return to prop mixing with continued cooling.
7. At 45°C or lower, add phase F, and very slowly add premix of phase G and continue mixing for 20
8. Add phase H and mix well. Replace any water lost to evaporation and mix batch until smooth.