This water-in-oil, zinc oxide-only sunscreen cream provides SPF 50+ sun protection without using organic UV filters. PEG-free Olivem® 2090, the only emulsifier used in this cold process, is a 100% naturally-derived ingredient that provides superior hydration and sensoriality. Hallstar’s innovative Micah® proactively protects the skin from photoaging damage. In vitro analysis suggests SPF ~ 65, PFA (PPD COLIPA 2011) ~ 20, UVA1/UV = 0.80, and critical wavelength 371 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Ethylhexyl Isononanoate | HallStar® Octyl Isononanoate | 18.00 | Emollient |
Diisobutyl Adipate | HallTress® DIBA Special | 3.00 | Solvent | |
Ethylhexyl Methoxycrylene | SolaStay® S1* | 3.00 | Photostabilizer | |
Diethylhexyl 2,6-Naphthalate | SolaFresh™ | 10.00 | Multifunctional Sunscreen Solvent | |
Tocopherol | Biochemica® Vitamin E Natural | 0.50 | Antioxidant Agent | |
Bis(Cyano Butylacetate) Anthracenediylidene | Micah® | 0.20 | Active Ingredient | |
| B | Polyglyceryl-4 Olivate/Polyricinoleate | Olivem® 2090 | 4.00 | Multifunctional Cold Process Emulsifier |
| Zinc Oxide, Triethoxycaprylylsilane | 25.00 | UV Filter / Sunscreen Agent | ||
Zinc Stearate | HallStar® Zinc Stearate | 2.00 | Gellant | |
| C | Glycerin | 2.00 | Humectant | |
| Xanthan Gum (pharma grade) | 0.20 | Thickener (Aqueous) | ||
| D | Water (Aqua) | up to 100 | Volatile Carrier | |
| Sodium Chloride | 1.00 | Stabilizing Agent | ||
| Preservative | a.n. | Preservative |
PREPARATIVE PROCEDURE
| 1 | To the main vessel, add phase A with mixing until uniform. Heat up to dissolve Micah® if needed |
| 2 | Add phase B into phase A, and mix strongly until uniform. |
| 3 | To a secondary vessel add premixture of phase C, and then add phase D with mixing. |
| 4 | When AB and CD phases are homogeneous, very slowly add phase cD to phase AB. |
| 5 | After combination, strongly mix or homogenize until uniform. |
PRODUCT CHARACTERISTICS (25°C)
| Appearance | Smooth cream |
| Viscosity (20 rpm, Brk, RV DV-II, T-D, after 24h at room temperature; mPa∙s) | 20000 - 30000 |
*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