This cold process oil-in-water sunscreen cream provides broad spectrum sun protection. It combines the benefits of a readily flowable zinc oxide dispersion (HallBrite® EZ-FLO ZDX, containing HallBrite® BHB (Butyloctyl Salicylate)) with Hallstar’s patented photoprotection expertise (SolaStay®S1). The inclusion of Hallstar’s Olivem® 2020 offers additional functionality, refreshing and cooling the skin, and improving moisture levels.
This formula was subjected to in vitro analysis and delivered SPF ~62, PFA (PPD) ~21 performance with critical wavelength 380 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Octocrylene [Octocrilene] | 10.00 | UV Filter / Sunscreen Agent | |
| Zinc Oxide [Zinc Oxide] (60%), Butyloctyl Salicylate, Triceteareth-4 Phosphate, Triethoxycaprylylsilane | HALLBRITE® EZ FLO ZDX | 14.00 | UV Filter/Sunscreen Agent / Carrier System | |
| Butyl Methoxydibenzoylmethane [Avobenzone] | 3.00 | UV Filter / Sunscreen Agent | ||
| VP/Hexadecene Copolymer | 1.00 | Film Former | ||
| B | Styrene/Acrylates Copolymer (hollow spherical, 325 nm) | 3.00 | SPF Booster | |
| C | Water (Aqua) | up to 100 | Volatile Carrier | |
| Glycerin | 3.00 | Humectant | ||
| Caprylyl Glycol, Phenoxyethanol, Hexylene Glycol | 0.80 | Preservative | ||
| Tetrasodium EDTA | 0.02 | Chelating Agent | ||
| Xanthan Gum (pharma grade) | 0.20 | Thickener (Aqueous) | ||
| D | Ethylhexyl Olivate, Sodium Acrylates Copolymer, Polyglyceryl-4 Olivate | OLIVEM® 2020 | 2.00 | Stabilizing Agent / Liquid Crystal Promoter |
| E | Dimethicone (5 cSt) | 4.00 | Emollient | |
| Silica (spherical, 12 µm) | 2.00 | Deoiling Agent |
| 1 | To a secondary vessel add phase A and start mixing (Heat up to 50 - 55°C to help dissolve Avobenzone fast if needed). After Avobenzone is dissolved totally, add phase B and mix until uniform. |
| 2 | To the main vessel add the liquids of phase C, start mixing and add solid item one by one. |
| 3 | When solids of phase C are fully incorporated, slowly add phase D to phase C with strongly mixing until a smooth gel is formed. |
| 4 | When both phases are homogeneous, slowly add phase AB to phase CD with prop mixing. |
| 5 | After a smooth gel is formed, add phase E one by one with mixing |
| 6 | Continue mixing until batch is smooth, replacing any water lost to evaporation and mixing until smooth. |
| Appearance | Off-white cream |
| Viscosity (20 rpm, Brk, RVII, SP 4, after 24h at room temperature; mPa∙s) | 20000 - 30000 |
| pH | 6.5 - 8.5 |
*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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