A broad spectrum natural (using only microfine oxide UV filters) sunscreen cream. SolaStay® S1 is incorporated to mitigate the photocatalytic and reactive oxygen species generating activities of oxides and so improve sunscreen performance. HallBrite® BHB aids wetting and dispersion of oxides and enhances product feel. This formulation was subjected to in vitro analysis and delivered SPF ~ 55, PFA (PPD) ~ 19 performance with critical wavelength 379 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Caprylic/Capric Triglyceride | 5.00 | Emollient | |
| Ethylhexyl Olivate | SENSOLENE® | 2.00 | Emollient | |
| Butyloctyl Salicylate | HALLBRITE® BHB* | 5.00 | Solvent | |
| Ethylhexyl Methoxycrylene | SolaStay® S1* | 3.00 | Photostabilizer | |
| Dimethicone (200 cSt) | 5.00 | Feel Modification / Enhancement | ||
| Ethylhexyl Palmitate | HALLSTAR® OP | 5.00 | Emollient | |
| Glyceryl Oleate | HALLSTAR® GMO | 0.80 | Emulsifier | |
| B | Titanium Dioxide [Titanium Dioxide], Aluminum Hydroxide (60 nm primary particle size) | 4.00 | UV Filter / Sunscreen Agent | |
| Zinc Oxide [Zinc Oxide], Triethoxycaprylylsilane (30-200 nm primary particle size) | 8.00 | UV Filter / Sunscreen Agent | ||
| C | Beeswax (Cera Alba) | 1.00 | Thickener (Nonaqueous) | |
| PEG-30 Dipolyhydroxystearate | 2.00 | Emulsifier | ||
| Polyethylene | 1.00 | Film Former | ||
| D | Water (Aqua) (deionized) | up to 100 | Volatile Carrier | |
| Butylene Glycol | 3.00 | Humectant | ||
| Disodium EDTA | 0.05 | Chelating Agent | ||
| Xanthan Gum (pharma grade) | 0.10 | Thickener (Aqueous) | ||
| Sodium Chloride | 1.00 | Thickener (Aqueous) | ||
| E | 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, mix until fully incorporated and heat to 80°C, mixing well. |
| 4 | When both phases are homogeneous and at their designated temperatures, start homogenizing oil phase ABC and slowly add water phase D. |
| 5 | When combined phases are homogeneous, start cooling and when batch is below 45°C add phase E with continued mixing. |
| 6 | Stop mixing batch when it has been cooled to room temperature. |
| Appearance | Off-white cream |
| Viscosity (Brk, RVDV-II, T-D, 20 rpm, after 24 h at room temperature; mPa∙s) | 15000 - 25000 |
*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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Tel.: 877 427 4255 (International n.: +1 312 385 4494) - Fax: +1 330 929 3616 - E-mail: customerservice@hallstar.com Web Site: hallstar.com
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