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Broad Spectrum SPF 20 Sunscreen Lotion

This formulation was designed to provide broad spectrum (SPF/PFA <3) label SPF 20 performance. SolaStay® S1 provides very rapid and efficient excited state quenching of Avobenzone, protecting it from photodegradation. SolaStay® S1 also mitigates the photocatalytic and reactive oxygen species generating activities of the oxide to improve sunscreen performance. HallBrite® BHB contributes to UV filter solubility and enhanced product feel. This formulation was subjected to in vitro analysis and delivered SPF ~23, PFA (PPD) ~8, performance with critical wavelength 378 nm.

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PhaseINCI Name [INN/USAN] (Other Information)Trade Name% WtFunction
AEthylhexyl MethoxycryleneSolaStay® S1*1.50Photostabilizer
Butyloctyl SalicylateHALLBRITE® BHB*5.00Sunscreen Solvent / Emollient
Homosalate [Homosalate] 10.00UV Filter / Sunscreen Agent
Ethylhexyl Salicylate [Octisalate] 5.00UV Filter / Sunscreen Agent
BTitanium Dioxide [Titanium Dioxide], Aluminum Hydroxide (60 nm primary particle size) 2.00UV Filter / Sunscreen Agent
CCetearyl AlcoholHALLSTAR® TA-1618 CETEARYL ALCOHOL0.50Emulsion Stabilizer
VP/Eicosene Copolymer 1.00Film Former
Glyceryl StearateHALLSTAR® GMS PURE1.20Emulsifier
PEG-100 StearateHALLSTAR® PEG 4400 MS MB1.20Emulsifier
Potassium Cetyl Phosphate, Hydrogenated Palm Glycerides 2.20Emulsifier
DButyl Methoxydibenzoylmethane [Avobenzone] 1.50UV Filter / Sunscreen Agent
EWater (Aqua) (deionized)  up to 100Volatile Carrier
Disodium EDTA 0.05Chelating Agent
Xanthan Gum (pharma grade) 0.20Thickener (Aqueous)
FPreservative a.n.Preservative
Glycerin 3.00Humectant

PREPARATIVE PROCEDURE

1In secondary vessel add phase A and start mixing. Slowly add phase B to phase A with continued mixing and begin heating to 85°C.
2After TiO2 is dispersed, add phase C ingredients to phase AB with mixing, then add phase D to phase ABC and mix until homogenous.
3Add the water from phase E to the main vessel, dissolve Disodium EDTA with continued mixing and then add Xanthan Gum, stirring until fully incorporated. Start heating phase E to 80°C and add premix of phase F to phase E.
4When both phases are homogeneous and at their designated temperatures, slowly add the oil phase ABCD to the water phase EF with prop mixing. Homogenize for 3 minutes, return to prop mixing and continue to cool and mix until batch is at room temperature.
5Replace any water lost to evaporation, mix batch until smooth and perform quality assurance checks.

PRODUCT CHARACTERISTICS (25°C)

Appearance Off-White, thick lotion
Viscosity (Brk, RVDV-II, T-D, 20 rpm, after 24 h at room temperature; mPa·s) 2500 - 4100
pH 6.0 - 7.0

*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

Tel.: 877 427 4255 (International n.: +1 312 385 4494) - Fax: +1 330 929 3616 - E-mail: customerservice@hallstar.com Web Site: hallstar.com