This formulation was designed to provide broad spectrum (SPF/PFA ≤3) performance. Extremely rapid excited state quenching SolaStay® S1 and HallBrite® ISO efficiently photostabilize Avobenzone, protecting it from photodegradation and so improve sunscreen performance. HallBrite® BHB contributes to UV filter solubility and enhanced product feel. One person in vivo testing yielded static SPF 46, PFA 19 in a US lab, SPF 46 in a Korean lab. In vitro SPF 40, PFA 16 with critical wavelength 380 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Ethylhexyl Methoxycrylene | SolaStay® S1* | 3.00 | Photostabilizer |
| Octyldodecyl Methoxycrylene | 私密內容: HALLBRITE® ISO* | 3.00 | Photostabilizer | |
| Butyloctyl Salicylate | HALLBRITE® BHB* | 5.00 | Sunscreen Solvent / Emollient | |
| Ethylhexyl Methoxycinnamate [Octinoxate] | 7.50 | UV Filter / Sunscreen Agent | ||
| Ethylhexyl Salicylate [Octisalate] | 5.00 | UV Filter / Sunscreen Agent | ||
| Homosalate [Homosalate] | 5.00 | UV Filter / Sunscreen Agent | ||
| B | Butyl Methoxydibenzoylmethane [Avobenzone] | 3.00 | UV Filter / Sunscreen Agent | |
| C | VP/Eicosene Copolymer | 1.00 | Film Former | |
| Cetearyl Olivate, Sorbitan Olivate | OLIVEM® 1000 | 2.50 | Self-Emulsifier / Liquid Crystal Maker | |
| Ceteareth-6 Olivate | OLIVEM® 800 | 3.00 | Co-emulsifier | |
| D | Water (Aqua) (deionized) | up to 100 | Volatile Carrier | |
| Glycerin | 3.00 | Humectant | ||
| Disodium EDTA | 0.05 | Chelating Agent | ||
| Xanthan Gum (pharma grade) | 0.30 | Thickener (Aqueous) | ||
| E | Preservative | a.n. | Preservative | |
| Cyclopentasiloxane | 4.00 | Emollient | ||
| Silica (spherical, 12 µm) | 2.00 | Deoiling Agent |
| 1 | To a secondary vessel add phase A, start mixing, add phase B and heat phase AB to 85°C. |
| 2 | Add phase C to phase AB with mixing. |
| 3 | To the main vessel add Water and Glycerin of phase D, start mixing, add chelant, and then add thickener of phase D. |
| 4 | Continue stirring phase D until fully incorporated and then start heating it to 80°C. |
| 5 | When both phases are homogeneous and at their designated temperatures, slowly add oil phase ABC to water phase D with prop mixing. |
| 6 | After 2 minutes, homogenize batch for 3 minutes and then start cooling. Add phase E when batch is below 50°C. |
| 7 | Continue mixing batch until at room temperature. Replace any water lost to evaporation and mix until smooth. |
| Appearance | Pale yellow lotion |
| Viscosity (Brk, RVDV-II, T-D, 20 rpm, after 24 h at room temperature; mPa∙s) | 2000 - 5000 |
| pH | 4.5 - 5.5 |
*Patented and Patent Pending
The information presented herein is believed to be accurate and reliable, but no warranty or guarantee, expressed or implied, is made regarding the information or the performance of any product. Further, nothing contained herein shall be taken as any inducement or recommendation to use, manufacture or sell that may infringe any patents or any other proprietary rights now or hereafter in existence, nor to imply compliance with any regulatory requirements
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