This sunscreen lotion spray utilizes elegant emollient and sunscreen solvent HallBrite® BHB to help solubilize Avobenzone and singlet state quencher SolaStay® S1 and triplet state quencher Polycrylene® to photostabilize it, delivering broad spectrum sun protection. This composition was subjected to in vitro analysis and delivered SPF ~32, PFA (PPD) ~17 performance with critical wavelength 379 nm. One person in vivo testing yielded static SPF 34.6 in support of in vitro results.
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] | 7.00 | UV Filter / Sunscreen Agent | |
Ethylhexyl Salicylate [Octisalate] | 4.50 | UV Filter / Sunscreen Agent | ||
Polyester-8 | POLYCRYLENE®* | 2.00 | Photostabilizer | |
Butyloctyl Salicylate | HALLBRITE® BHB* | 5.00 | Emollient / Sunscreen Solvent | |
Ethylhexyl Methoxycrylene | SolaStay® S1* | 2.00 | Photostabilizer | |
C | Butyl Methoxydibenzoylmethane [Avobenzone] | 3.00 | UV Filter / Sunscreen Agent | |
D | Ceteareth-25, Disodium Ethylene Dicocamide PEG-15 Disulfate | 3.00 | Emulsifier | |
Tri-C14-15 Alkyl Citrate | 1.50 | Conditioning Agent | ||
VP/Eicosene Copolymer | 2.00 | Film Former | ||
E | Styrene/Acrylates Copolymer (hollow spherical, 325 nm) | 3.00 | SPF Booster | |
F | Water (Aqua) (deionized) | 9.60 | Volatile Carrier | |
Microcrystalline Cellulose, Cellulose Gum | 0.40 | Thickener (Aqueous) | ||
G | Preservative | a.n. | Preservative | |
Glycerin | 3.00 | Humectant | ||
H | 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, add phase D items and then add phase E. |
3 | With both phases at 70°C, add phase BCDE to phase A with stirring. After mixing for 5 min, start cooling and homogenize for 3 min. |
4 | Resume mixing while cooling and, at 50°C or lower, very slowly add previously prepared phase F dispersion. |
5 | After mixing 20 minutes, add premixed phase G and then add phase H items with continued mixing. |
6 | Replace any water lost to evaporation and mix until smooth. |
Appearance | Pale Yellow thin liquid |
Viscosity (Brk, RVDV-II, Sp 4, 20 rpm, after 24 h at room temperature; mPa·s) | 950 - 1650 |
pH | 6.5 - 7.5 |
*Patented and Patent Pending
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