This oil-in-water SPF 50 sunscreen lotion uses mineral filters only — namely, non-nano zinc oxide — to provide UV protection. It boasts a light skin feel and low viscosity, despite its high ZnO load. The cold-processable formulation is stabilized with a single emulsifier and no high melting point materials. The formulation’s combination of HallBrite® ZDX Clear and Biochemica® Turmeric Butter provides additional structuring and multifunctional skin benefits. It was subjected to in vitro analysis and delivered SPF ~ 52, PFA (PPD) 17, UVA1/UV = 0.80, performance with critical wavelength 372 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Zinc Oxide (68%), Butyloctyl Salicylate, Ethylhexyl Isononanoate, Ethylhexyl Methoxycrylene, Polyhydroxystearic Acid | HallBrite® ZDX Clear | 37.00 | UV Filter/Sunscreen Agent / Carrier System |
Ethylhexyl Isononanoate | HallStar® Octyl Isononanoate | 8.00 | Emollient | |
Vegetable Oil (and) Simmondsia Chinensis (Jojoba) Seed Oil (and) Curcuma Longa (Turmeric) Root Extract | SolaPure™Glo | 2.50 | Emollient | |
Polyglyceryl-10 Oleate | HallStar® PG10-O | 3.50 | Emulsifier | |
| B | Xanthan Gum (pharma grade) | 0.30 | Thickener (Aqueous) / Emulsion Stabilizer | |
| Glycerin | 3.00 | Humectant | ||
| C | Disodium EDTA | 0.05 | Chelating Agent | |
| Water (Aqua) | up to 100 | Volatile Carrier | ||
| Preservative | a.n. | Preservative | ||
| D | Silica (spherical, 12 µm) | 2.00 | Deoiling Agent |
PREPARATIVE PROCEDURE
| 1 | To a secondary vessel add phase A, heat up to melt SolaPure™Glo with mixing until uniform, then turn off heat. |
| 2 | To the main vessel add premixture phase B, start mixing and add phase C with mixing. |
| 3 | When both phases are homogeneous, slowly add phase A to phase BC with prop mixing until uniform. |
| 4 | Add phase D with mixing until uniform. |
PRODUCT CHARACTERISTICS (25°C)
| Appearance | Off-white lotion |
| Viscosity (20 rpm, Brk, RV DV-II, T-D, after 24h at room temperature; mPa∙s) | 3000 - 4000 |
| pH (as is) | 7.0 - 7.5 |
*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
The Hallstar Company - 120 South Riverside Plaza Suite 1620 - Chicago, IL 60606-3911 USA hallstarbeauty.com