This formulation was subjected to in vitro analysis and delivered SPF ~16, PFA (PPD) ~5 performance with critical wavelength 374 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Butyloctyl Salicylate | HALLBRITE® BHB* | 5.00 | Solvent |
| Ethylhexyl Methoxycrylene | SolaStay® S1* | 1.50 | Photostabilizer | |
| Ethylhexyl Methoxycinnamate [Octinoxate] | 2.50 | UV Filter / Sunscreen Agent | ||
| B | Titanium Dioxide [Titanium Dioxide], Aluminum Hydroxide (60 nm primary particle size) | 2.10 | UV Filter / Sunscreen Agent | |
| C | VP/Eicosene Copolymer | 1.00 | Film Former | |
| Cetearyl Alcohol | HALLSTAR® TA-1618 CETEARYL ALCOHOL | 1.00 | Thickener (Nonaqueous) | |
| Glyceryl Stearate | HALLSTAR® GMS PURE | 2.50 | Emulsifier | |
| PEG-100 Stearate | HALLSTAR® PEG 4400 MS MB | 1.00 | Co-emulsifier | |
| Cetearyl Olivate, Sorbitan Olivate | OLIVEM® 1000 | 2.00 | Emulsifier / Liquid Crystal Maker | |
| D | Water (Aqua) (deionized) | up to 100 | Volatile Carrier | |
| Disodium EDTA | 0.05 | Chelating Agent | ||
| Xanthan Gum (pharma grade) | 0.30 | Thickener (Aqueous) | ||
| E | Preservative | a.n. | Preservative | |
| Glycerin | 3.00 | Humectant |
| 1 | In secondary vessel add A and start mixing, Slowly add B with continued mixing |
| 2 | Heat this oil phase to 70'C and then, add Phase C with mixing |
| 3 | To the main Vessel add Water from phase D and start mixing. Add EDTA , when dissolved, add Xanthan gum |
| 4 | When Fully incorporated, start heating to 70'C and add premix of E. |
| 5 | when both phases are at 70'C add oil phase (A-C) to the water phase (D-E) with strong mixing |
| 6 | homogenize for 3 mins and start cooling |
| 7 | continue mixing until room temperature. Replace any water lost to evaporation, and mix until smooth |
| Appearance | White Cream |
| Viscosity(Brk, RVDV-II, T-D, 20 rpm, after 24 h at room temperature; mPa∙s) | 15500 - 25500 |
| pH | 5.5-6.5 |
*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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