This water-in-oil sunscreen cream provides broad spectrum sun protection without using organic UV filters. The amazing, photostabilizing, anti-aging ingredient, SolaStay® S1, mitigates the photocatalytic and reactive oxygen species-generating activities of the oxides. The addition of dermollient Sensolene® adds a unique sensoriality.
This formula was subjected to in vitro analysis and delivered SPF ~60, PFA (PPD) ~14 performance with critical wavelength 373 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Ethylhexyl Palmitate | HallStar® OP | 10.00 | Emollient |
Ethylhexyl Olivate | Sensolene® | 3.00 | Emollient | |
Ethylhexyl Methoxycrylene | SolaStay® S1* | 3.00 | Photostabilizer | |
| Cyclopentasiloxane, Disteardimonium Hectorite, Propylene Carbonate | 3.00 | Rheological Control / Enhanced Skin Feel | ||
| Cetyl PEG/PPG-10/1 Dimethicone | 2.50 | Emulsifier | ||
| Dimethicone (5 cSt) | 3.00 | Feel Modification / Enhancement | ||
| Acrylates/Dimethicone Copolymer | 1.00 | Film Former | ||
| Cetyl Dimethicone | 1.00 | Emollient | ||
| B | 10.00 | UV Filter/Sunscreen Agent / Carrier System | ||
| Zinc Oxide [Zinc Oxide], Triethoxycaprylylsilane (20-30 nm primary particle size) | 18.00 | UV Filter / Sunscreen Agent | ||
| C | Polymethylsilsesquioxane | 1.00 | Skin Conditioning Agent | |
| Beeswax (Cera Alba) | 0.50 | Thickener (Nonaqueous) | ||
| D | Water (Aqua) (deionized) | up to 100 | Volatile Carrier | |
| Glycerin | 6.00 | Humectant | ||
| Disodium EDTA | 0.05 | Chelating Agent | ||
| Sodium Chloride | 0.80 | Stabilizing Agent | ||
| Preservative | a.n. | Preservative |
PREPARATIVE PROCEDURE
| 1 | To the main vessel add phase A, start mixing, disperse phase B in phase A and heat phase AB to 70°C. |
| 2 | Add phase C to phase AB and mix well until uniform. |
| 3 | To a secondary vessel add phase D, start mixing and when fully incorporated heat to 50°C. |
| 4 | When both phases are homogeneous and at temperature, start homogenizing phase ABC and very slowly add phase D to it. |
| 5 | When batch is uniform start cooling to room temperature. |
PRODUCT CHARACTERISTICS (25°C)
| Appearance | Off-white cream |
| Viscosity (Brk, RV DV-II, T-D, 20 rpm, after 24h at room temperature; mPa∙s) | 20000 - 30000 |
*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
The Hallstar Company - 120 South Riverside Plaza Suite 1620 - Chicago, IL 60606-3911 USA hallstarbeauty.com