This water-in-silicone sunscreen lotion provides broad spectrum sun protection without using organic UV filters. SolaStay® S1 (Ethylhexyl Methoxycrylene) in HallBrite® EZ-FLO TDX Plus mitigates the photocatalytic and reactive oxygen species-generating activities of the oxides. Six person in vivo testing yielded static SPF 73.4 in an EU lab. In vitro analysis delivered SPF ~68, PFA (PPD) ~20 performance with critical wavelength 374 nm.
Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
---|---|---|---|---|
A | Isopropyl Myristate | HALLSTAR® IPM-NF | 8.00 | Emollient |
Butyloctyl Salicylate, Titanium Dioxide (nano) [Titanium Dioxide] (23%), C12-15 Alkyl Benzoate, Ethylhexyl Methoxycrylene, Triceteareth-4 Phosphate, Dimethicone Crosspolymer, Silica | HALLBRITE® EZ-FLO TDX PLUS* | 14.00 | UV Filter/Sunscreen Agent / Photostabilizer / Carrier System | |
B | Sorbitan Olivate | OLIVEM® 900 | 1.00 | Co-emulsifier |
Beeswax (Cera Alba) | 0.80 | Stabilizing Agent | ||
Nylon-12 (10 μm) | 2.00 | Deoiling Agent | ||
C | Zinc Oxide [Zinc Oxide], Triethoxycaprylylsilane (20-30 nm primary particle size) | 20.00 | UV Filter / Sunscreen Agent | |
D | Cyclopentasiloxane, Disteardimonium Hectorite, Propylene Carbonate | 2.00 | Viscosity Increasing Agent (Nonaqueous) | |
Cetyl PEG/PPG-10/1 Dimethicone | 2.50 | Emulsifier | ||
Cyclopentasiloxane, Cyclohexasiloxane | 15.00 | Feel Modification / Enhancement | ||
E | Styrene/Acrylates Copolymer (hollow spherical, 325 nm) | 3.00 | SPF Booster | |
F | Water (Aqua) (deionized) | up to 100 | Volatile Carrier | |
Glycerin | 6.00 | Humectant | ||
Disodium EDTA | 0.05 | Chelating Agent | ||
Sodium Chloride | 1.00 | Emulsion Stabilizer | ||
G | Caprylyl Glycol, Phenoxyethanol, Hexylene Glycol | a.n. | Preservative |
1 | To the main vessel add phase A, start mixing, heat to 80°C and then add phase B. |
2 | When uniform, slowly add phase C to phase AB and when again uniform add premix of phase D, mixing well until uniform. |
3 | Add phase E to phase ABCD immediately before this oil phase will be combined with the water phase. |
4 | In a secondary vessel combine phase F, mixing until fully incorporated while heating to 75°C. |
5 | When both phases are homogeneous and at temperature, start homogenizing oil phase ABCDE and very slowly add water phase F to it. |
6 | Start cooling this batch to room temperature with continued gentle homogenization. |
7 | When batch is below 50°C add phase G. |
Appearance | Off-white lotion |
Viscosity (Brk, DVII, T-D, 20 rpm, after 24h at room temperature; mPa∙s) | 9,000 - 14,000 |
*Patented and Patent Pending
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