This sunscreen lotion formulation was designed to provide broad spectrum (SPF/PFA ≤3) label SPF 30 performance. HallBrite® ISO provides very rapid and efficient excited state quenching of Avobenzone, protecting it from photodegradation and so improves sunscreen performance. HallBrite® BHB aids UV filter solubility and enhances product feel. This formulation was subjected to in vitro analysis and delivered SPF ~ 33, PFA (PPD) ~ 10 performance with critical wavelength 378 nm.
| Phase | INCI Name [INN/USAN] (Other Information) | Trade Name | % Wt | Function |
|---|---|---|---|---|
| A | Octyldodecyl Methoxycrylene | 私密內容: HALLBRITE® ISO* | 4.00 | Photostabilizer |
| Butyloctyl Salicylate | HALLBRITE® BHB* | 5.00 | Emollient / Sunscreen Solvent | |
| Ethylhexyl Salicylate [Octisalate] | 5.00 | UV Filter / Sunscreen Agent | ||
| Homosalate [Homosalate] | 5.00 | UV Filter / Sunscreen Agent | ||
| Butyl Methoxydibenzoylmethane [Avobenzone] | 3.50 | UV Filter / Sunscreen Agent | ||
| C | Cetearyl Alcohol | HALLSTAR® TA-1618 CETEARYL ALCOHOL | 1.00 | Thickener (Nonaqueous) |
| VP/Eicosene Copolymer | 1.00 | Film Former | ||
| Polysorbate 60 | 1.60 | Emulsifier | ||
| Glyceryl Stearate | HALLSTAR® GMS PURE | 1.95 | Emulsifier | |
| PEG-100 Stearate | HALLSTAR® PEG 4400 MS | 1.30 | Co-emulsifier | |
| D | Water (Aqua) (deionized) | up to 100 | Volatile Carrier | |
| Disodium EDTA | 0.05 | Chelating Agent | ||
| Xanthan Gum | 0.20 | Thickener (Aqueous) | ||
| E | Preservative | a.n. | Preservative | |
| Butylene Glycol | 3.00 | Humectant | ||
| F | Water (Aqua) (deionized) | 20.00 | Volatile Carrier | |
| Phenylbenzimidazole Sulfonic Acid [Ensulizole] | 4.00 | UV Filter / Sunscreen Agent | ||
| Sodium Hydroxide (20% aqueous) | 2.80 | pH Adjuster | ||
| G | Cyclohexasiloxane | 4.00 | Feel Modification / Enhancement | |
| Silica (spherical, 12 µm) | 2.00 | Feel Modification / Enhancement | ||
| Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Isohexadecane, Polysorbate 80 | 2.00 | Thickener (Aqueous) |
| 1 | In a secondary vessel combine phase A and mix well. Dissolve phase B in phase A with mixing and heat phase AB to 80°C. |
| 2 | Add phase C to phase AB with mixing until homogeneous. |
| 3 | In the main vessel, add water of phase D and dissolve EDTA. When EDTA has dissolved, add Xanthan Gum and mix until fully incorporated. |
| 4 | Heat main vessel to 80°C and add premix of phase E. |
| 5 | When oil phase (ABC) and water phase (DE) are both homogeneous and at designated temperatures, slowly add oil phase to water phase with prop mixing. Then homogenize for 3 mins, resume prop mixing and start cooling. |
| 6 | Add premixed phase F into phase ABCDE to bring pH to 7.5-8.0. |
| 7 | When batch is below 50°C add phase G individually with mixing. |
| 8 | When the batch is uniform, add deionized water to correct for evaporative losses and continue mixing until smooth. |
| Appearance | Off White Lotion |
| Viscosity (Brk, RVDV-II, Sp 4, 20 rpm, after 24 h at room temperature; mPa∙s) | 4000 - 9000 |
| pH | 6.5 - 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
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Tel.: 877 427 4255 (International n.: +1 312 385 4494) - Fax: +1 330 929 3616 - E-mail: customerservice@hallstar.com Web Site: hallstar.com
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