This sunscreen lotion spray 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. HallBrite® BHB contributes to UV filter solubility and enhances product feel. This formulation was subjected to in vitro analysis and delivered SPF ~35 , PFA (PPD) ~15 performance with critical wavelength 375 nm.
Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
---|---|---|---|---|
A | Water (Aqua) (deionized) | up to 100 | Volatile Carrier | |
Disodium EDTA | 0.05 | Chelating Agent | ||
Xanthan Gum (pharma grade) | 0.25 | Thickener (Aqueous) | ||
B | Homosalate [Homosalate] | 10.00 | UV Filter / Sunscreen Agent | |
Ethylhexyl Salicylate [Octisalate] | 5.00 | UV Filter / Sunscreen Agent | ||
C12-15 Alkyl Benzoate | 5.00 | Emollient | ||
Butyloctyl Salicylate | HALLBRITE® BHB* | 5.00 | Emollient | |
Ethylhexyl Methoxycrylene | SolaStay® S1* | 2.00 | Photostabilizer | |
Diisobutyl Adipate | HALLTRESS® DIBA SPECIAL | 3.00 | Solvent | |
C | Butyl Methoxydibenzoylmethane [Avobenzone] | 2.50 | UV Filter / Sunscreen Agent | |
Benzophenone-3 [Oxybenzone] | 4.00 | UV Filter / Sunscreen Agent | ||
D | VP/Eicosene Copolymer | 1.50 | Film Former | |
Ceteareth-25, Disodium Ethylene Dicocamide PEG-15 Disulfate | 3.00 | Emulsifier | ||
Tri-C14-15 Alkyl Citrate | 1.50 | Conditioning Agent | ||
E | Microcrystalline Cellulose, Cellulose Gum (4% aqueous) | 10.00 | Thickener (Aqueous) | |
F | Preservative | a.n. | Preservative | |
Glycerin | 3.00 | Humectant | ||
G | Cyclopentasiloxane | 2.00 | Emollient | |
Olea Europaea (Olive) Leaf Extract, Water | EUROL® BT | 0.20 | Multifunctional Active Ingredient |
1 | To the main vessel add the Water of phase A, start mixing, add the remaining phase A ingredients in order, and heat to 70°C. |
2 | To a secondary vessel add phase B, start mixing, add phase C, heat to 70°C, and then add phase D. |
3 | With both phases at 70°C, add phase BCD to phase A with stirring. After mixing for 5 mins, start cooling and homogenize for 3 minutes. |
4 | Continue mixing with cooling. At 50°C or lower, very slowly add phase E, and mix for 20 minutes. |
5 | Combine and add phase F, then add phase G. When batch is at 35°C or lower, add phase H with mixing. |
6 | Replace any water lost to evaporation and mix until smooth. |
Appearance | Off White - Pale Yellow Thin Liquid |
Viscosity (Brk, RVDV-II, Sp 4, 20 rpm, after 24 h at room temperature; mPa·s) | 1350 - 2250 |
pH | 5.5 - 6.5 |
*Patented and Patent Pending
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