SolaStay® S1 is incorporated to mitigate the photocatalytic and reactive oxygen species generating activities of oxides, protecting it from photodegradation, and so improve sunscreen performance. HallBrite® BHB aids wetting and dispersion of oxides and enhanced product feel. This formulation was subjected to in vitro analysis and delivered SPF ~55, PFA (PPD) ~11 performance with critical wavelength 378 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Caprylic/Capric Triglyceride | 5.47 | Emollient | |
| Ethylhexyl Methoxycinnamate [Octinoxate] | 5.47 | UV Filter / Sunscreen Agent | ||
| Butyloctyl Salicylate | HALLBRITE® BHB* | 3.28 | Solvent | |
| Tocopheryl Acetate | 0.22 | Antioxidant Agent | ||
| Ethylhexyl Methoxycrylene | SolaStay® S1* | 2.74 | Photostabilizer | |
| Cyclopentasiloxane, Disteardimonium Hectorite, Propylene Carbonate | 3.28 | Feel Modification / Enhancement | ||
| Cetyl PEG/PPG-10/1 Dimethicone | 2.74 | Emulsifier | ||
| Cetyl Dimethicone | 1.09 | Skin Conditioning Agent | ||
| B | Titanium Dioxide [Titanium Dioxide], Aluminum Hydroxide (60 nm primary particle size) | 2.74 | UV Filter / Sunscreen Agent | |
| Zinc Oxide [Zinc Oxide], Triethoxycaprylylsilane (30-200 nm primary particle size) | 4.38 | UV Filter / Sunscreen Agent | ||
| C | Beeswax (Cera Alba) | 0.33 | Thickener (Nonaqueous) | |
| C30-38 Olefin/Isopropyl Maleate/MA Copolymer | 0.55 | Film Former | ||
| D | Water (Aqua) (deionized) | up to 100 | Volatile Carrier | |
| Disodium EDTA | 0.05 | Chelating Agent | ||
| Sodium Chloride | 0.48 | Thickener (Aqueous) | ||
| E | Butylene Glycol | 2.88 | Humectant | |
| Preservative | a.n. | Preservative |
| 1 | To the main vessel add phase A and start mixing, disperse phase B , heat to 85°C. |
| 2 | Add phase C into phase AB, and mix well until all are dissolved. |
| 3 | To a secondary vessel add phase D, start mixing until fully incorporated. Start heating to 80°C. Add phase E. |
| 4 | When both phases are homogenous and at their designated temperatures, start homeginizing the oil phase (A-C) and slowly add water phase DE to the oil phase under homogenizing. Start cooling. |
| Appearance | Off-White to Pale Yellow Cream |
| Viscosity (Brk, RVDV-II, T-D, 20 rpm, after 24 h at room temperature; mPa∙s) | 30000 - 50000 |
*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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