This formulation was designed to US use. HallBrite® ISO is incorporated to mitigate the photocatalytic and reactive oxygen species generating activities of Titanium Dioxide , protecting it from photodegradation, and so improve sunscreen performance. HallBrite® BHB aids wetting and dispersion of the Titanium Dioxide and contributes to UV filter solubility and enhanced product feel. This formulation was subjected to in vitro analysis and delivered SPF ~35, PFA (PPD) ~5 performance with critical wavelength 373 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Octyldodecyl Methoxycrylene | 私密內容: HALLBRITE® ISO* | 3.00 | Photostabilizer |
| Butyloctyl Salicylate | HALLBRITE® BHB* | 5.00 | Emollient | |
| Butyrospermum Parkii (Shea) Butter | BIOCHEMICA® SHEA BUTTER REFINED | 0.50 | Emollient | |
| Ethylhexyl Methoxycinnamate [Octinoxate] | 4.50 | UV Filter / Sunscreen Agent | ||
| B | Titanium Dioxide [Titanium Dioxide], Aluminum Hydroxide (60 nm primary particle size) | 3.10 | UV Filter / Sunscreen Agent | |
| C | VP/Eicosene Copolymer | 1.00 | Film Former | |
| Glyceryl Stearate | HALLSTAR® GMS PURE | 2.00 | Emulsifier | |
| PEG-100 Stearate | HALLSTAR® PEG 4400 MS | 2.80 | Emulsifier | |
| D | Water (Aqua) (deionized) | up to 100 | Volatile Carrier | |
| Disodium EDTA | 0.05 | Chelating Agent | ||
| Xanthan Gum (pharma grade) | 0.15 | Thickener (Aqueous) | ||
| E | Preservative | a.n. | Preservative | |
| Glycerin | 3.00 | Humectant | ||
| F | Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Isohexadecane, Polysorbate 80 | 2.00 | Thickener (Aqueous) / Emulsion Stabilizer |
| 1 | To a secondary vessel add phase A, start mixing and slowly add phase B to phase A with continued mixing. |
| 2 | Heat phase AB to 80°C and then add phase C ingredients in order with mixing. |
| 3 | To the main vessel add Water of phase D with mixing, add Disodium EDTA, then add Xanthan Gum, and heat this phase to 75°C. |
| 4 | When both phases are homogeneous at their designated temperatures, slowly add phase ABC to phase D withmixing. |
| 5 | Homogenize for 3 minutes and resume prop mixing. |
| 6 | Start cooling and when below 50°C, slowly add previously prepared phase E dispersion, and then add phase F with mixing. |
| 7 | Replace any water lost to evaporation and mix batch until smooth and at desired filling temperature. |
| Appearance | Off white Cream |
| Viscosity (Brk, RVDV-II, T-D, 20 rpm, after 24 h at room temperature; mPa∙s) | 24500 - 40500 |
| pH | 6.0-7.0 |
*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
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