This transparent sunscreen stick formulation is designed to provide label SPF 30 performance.
- SolaStay® S1 provides photostabilization for avobenzone.
- HallBrite® BHB contributes to enhanced product feel.
- The combination of SolaStay® S1, HallBrite® BHB, Biochemica® Argan Oil Refined, and Biochemica® Hemp Oil Refined provides the perfect polarity to form a transparent stick.
In vivo testing in a US laboratory (5 subjects) yielded static SPF 39. Colipa Guideline (2011) delivered SPF ~38 and PFA (PPD) ~11 performance. Critical wavelength = 375 nm. UVA1/UVA = 0.75.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Octocrylene [Octocrilene] | 8.00 | UV Filter / Sunscreen Agent | |
| Homosalate [Homosalate] | 9.50 | UV Filter / Sunscreen Agent | ||
| Ethylhexyl Salicylate [Octisalate] | 4.50 | UV Filter / Sunscreen Agent | ||
| Butyloctyl Salicylate | HallBrite® BHB* | 5.00 | Sunscreen Solvent / Emollient | |
| Ethylhexyl Methoxycrylene | SolaStay® S1* | 2.00 | Photostabilizer | |
| VP/Hexadecene Copolymer | 1.00 | Film Former | ||
| Argania Spinosa Kernel Oil | Biochemica® Argan Oil Refined | 30.00 | Emollient | |
| Cannabis Sativa Seed Oil | Biochemica® Hemp Oil Refined Organic | 11.00 | Emollient | |
| Butyl Methoxydibenzoylmethane [Avobenzone] | 3.00 | UV Filter / Sunscreen Agent | ||
| B | Polyamide-3 | 2.00 | Structuring agent | |
| Polyamide-8 | up to 100 | Structuring agent |
PREPARATIVE PROCEDURE
| 1 | Add Phase A to the main vessel, start center-stir (prop) mixing and heat to 100°C. |
| 2 | Add Phase B to Phase A and mix until uniform and clear to make sure phase B is totally dissolved. |
| 3 | Start cooling with mixing until 70°C. Stop mix and filling into containers. |
PRODUCT CHARACTERISTICS (25°C)
| Appearance | Transparent 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