A broad-spectrum SPF 50 sunscreen lotion using both organic and mineral UV filters. SolaStay® S1 is incorporated to mitigate the photocatalytic and reactive oxygen species generating activities of the oxides. Oh Wow! 50 Lotion was subjected to in vitro analysis and delivered SPF ~55, PFA (PPD) ~18 performance with critical wavelength 381 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Isopropyl Myristate | HallStar® IPM-NF | 3.00 | Emollient |
| Ethylhexyl Methoxycinnamate [Octinoxate] | 3.00 | UV Filter / Sunscreen Agent | ||
| Homosalate [Homosalate] | 10.00 | UV Filter / Sunscreen Agent | ||
| Ethylhexyl Salicylate [Octisalate] | 5.00 | UV Filter / Sunscreen Agent | ||
Ethylhexyl Methoxycrylene | SolaStay® S1* | 3.00 | Photostabilizer | |
| B | 10.00 | UV Filter/Sunscreen Agent / Carrier System | ||
| C | VP/Eicosene Copolymer | 1.00 | Film Former / Water Resistance Enhancer | |
Glyceryl Stearate | HallStar® GMS Pure | 3.00 | Emulsifier | |
PEG-100 Stearate | HallStar® PEG 4400 MS MB | 2.90 | Emulsifier | |
| Butyl Methoxydibenzoylmethane [Avobenzone] | 3.00 | UV Filter / Sunscreen Agent | ||
| D | Water (Aqua) (deionized) | up to 100 | Volatile Carrier | |
| Glycerin | 3.00 | Humectant | ||
| E | Disodium EDTA | 0.05 | Chelating Agent | |
| Xanthan Gum (pharma grade) | 0.20 | Thickener (Aqueous) | ||
| F | Preservative | a.n. | Preservative | |
| Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Isohexadecane, Polysorbate 80 | 0.50 | Viscosity Increasing Agent (Aqueous) | ||
| Cyclopentasiloxane | 3.00 | Feel Modification / Enhancement | ||
| Aluminum Starch Octenylsuccinate | 1.00 | Deoiling Agent |
PREPARATIVE PROCEDURE
| 1 | To a secondary vessel add phase A and start mixing, add phase B and heat to 80°C. |
| 2 | Add phase C into phase AB, mixing well until all are dissolved. |
| 3 | To the main vessel add phase D, start mixing and add phase E items in order. |
| 4 | When solids of phase E are fully incorporated in phase D, heat phase DE to 75°C. |
| 5 | When both phases are homogeneous and at their designated temperatures, slowly add phase ABC to phase DE with mixing. |
| 6 | Start homogenizing batch and after 3 minutes, resume center stir mixing and start cooling batch. |
| 7 | When batch is below 45°C add phase F ingredients one by one in order with mixing. |
| 8 | Continue mixing until batch is at room temperature, replacing any water lost to evaporation and mixing until smooth. |
PRODUCT CHARACTERISTICS (25°C)
| Appearance | Off-white lotion |
| Viscosity (Brk, RV DV-II, T-D, 20rpm, after 24h at room temperature; mPa·s) | 4000 - 7000 |
| 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
The Hallstar Company - 120 South Riverside Plaza Suite 1620 - Chicago, IL 60606-3911 USA hallstarbeauty.com