This mineral UV filters only oil-in-water broad spectrum sunscreen cream uses SolaStay® S1 to mitigate the photocatalytic and reactive oxygen species generating activities of the oxides. It was subjected to in vitro analysis and delivered SPF ~104, PFA (PPD) ~26 performance with critical wavelength 380 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Ethylhexyl Olivate | Sensolene® | 3.00 | Emollient |
Butyrospermum Parkii (Shea) Butter | Biochemica® Shea Butter Refined | 0.50 | Emollient | |
Ethylhexyl Methoxycrylene | SolaStay® S1* | 3.00 | Photostabilizer | |
| 10.00 | UV Filter/Sunscreen Agent / Carrier System | |||
| B | VP/Eicosene Copolymer | 1.50 | Film Former / Water Resistance Enhancer | |
Glyceryl Stearate | HallStar® GMS Pure | 2.50 | Emulsifier | |
PEG-100 Stearate | HallStar® PEG 4400 MS MB | 2.10 | ||
| C | Water (Aqua) | up to 100 | Volatile Carrier | |
| Glycerin | 3.00 | Humectant | ||
| D | Disodium EDTA | 0.05 | Chelating Agent | |
| Xanthan Gum (pharma grade) | 0.25 | Thickener (Aqueous) / Emulsion Stabilizer | ||
| E | Zinc Oxide [Zinc Oxide], Silica (10-30 nm primary particle size) | 20.00 | UV Filter / Sunscreen Agent | |
| F | Styrene/Acrylates Copolymer (hollow spherical, 325 nm) | 4.00 | SPF Booster | |
| G | Preservative | a.n. | Preservative | |
| Cyclopentasiloxane | 5.00 | Feel Modification / Enhancement |
PREPARATIVE PROCEDURE
| 1 | To a secondary vessel add phase A, start mixing, heat to 80°C and add phase B. |
| 2 | To the main vessel add phase C, start mixing and the add Phase D items in order. |
| 3 | When solids of phase D are fully incorporated, heat phase CD to 75°C and add phase E. |
| 4 | When both phases are homogeneous and at their designated temperatures, add phase F to phase AB and mix until uniform. |
| 5 | Slowly add phase ABF to phase CDE with strongly mixing. |
| 6 | Homogenize for 3 minutes, start cooling, and when batch is below 50°C add items in Phase G one by one with mixing. |
| 7 | Continue mixing until batch is at room temperature, replacing any water lost to evaporation and mixing until smooth. |
PRODUCT CHARACTERISTICS (25°C)
| Appearance | Off-white lotion |
| Viscosity (20 rpm, Brk, RVII, SP 4, after 24h at room temperature; mPa∙s) | 4000 - 6000 |
| pH (as is) | 6.0 - 8.0 |
*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