This sunscreen stick formulation is designed to provide broad spectrum (SPF/PFA ≤ 3), label SPF 50 performance. SolaStay® S1 provides photostabilization for Avobenzone. HallBrite® BHB contributes to enhanced product feel. In vivo testing yielded static SPF 55 and PFA 19 in a Korean lab. Subjected to in vitro analysis it delivered SPF ~54, PFA (PPD) ~17 (PA++++) performance with critical wavelength 375 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Isopropyl Myristate | HallStar® IPM-NF | up to 100 | Emollient |
| Octocrylene [Octocrilene] | 10.00 | UV Filter / Sunscreen Agent | ||
| Homosalate [Homosalate] | 10.00 | UV Filter / Sunscreen Agent | ||
| Ethylhexyl Salicylate [Octisalate] | 5.00 | UV Filter / Sunscreen Agent | ||
Butyloctyl Salicylate | HallBrite® BHB* | 5.00 | Emollient / Sunscreen Solvent | |
Ethylhexyl Methoxycrylene | SolaStay® S1* | 3.00 | Photostabilizer | |
| VP/Hexadecene Copolymer | 2.00 | Film Former | ||
| B | Butyl Methoxydibenzoylmethane [Avobenzone] | 3.00 | UV Filter / Sunscreen Agent | |
| C | Beeswax (Cera Alba) | 23.00 | Stabilizing Agent | |
Sorbitan Olivate | Olivem® 900 | 9.00 | Stabilizing Agent | |
| Nylon-12 | 5.00 | Deoiling Agent |
PREPARATIVE PROCEDURE
| 1 | In the main vessel, combine and mix phase A and add phase B. |
| 2 | Heat phase AB to 85°C and add phase C with mixing. |
| 3 | Start cooling and pour into containers at 60 - 65°C. |
PRODUCT CHARACTERISTICS (25°C)
| Appearance | Yellow soft stick |
*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