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Broad Spectrum SPF 50 Sunscreen Lotion

This O/W formulation was designed to provide broad spectrum (SPF/PFA <3), label SPF 50 performance. SolaStay® S1 provides very rapid and efficient excited state quenching of Avobenzone, protecting it from photodegradation. HallBrite® BHB contributes to UV filter solubility and enhances product feel. This formulation was subjected to in vitro analysis and delivered SPF ~ 50, PFA ~ 17 performance with critical wavelength 378 nm.

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PhaseINCI Name [INN/USAN] (Other Information)Trade Name% WtFunction
AEthylhexyl MethoxycryleneSolaStay® S1*2.00Photostabilizer
Homosalate [Homosalate] 10.00UV Filter / Sunscreen Agent
Butyloctyl SalicylateHALLBRITE® BHB*5.00Emollient / Sunscreen Solvent
Ethylhexyl Salicylate [Octisalate] 5.00UV Filter / Sunscreen Agent
BButyl Methoxydibenzoylmethane [Avobenzone] 3.00UV Filter / Sunscreen Agent
CVP/Eicosene Copolymer 2.00Film Former
Glyceryl StearateHALLSTAR® GMS PURE1.20Emulsifier
PEG-100 StearateHALLSTAR® PEG 4400 MS1.00Emulsifier
Potassium Cetyl Phosphate, Hydrogenated Palm Glycerides 2.50Emulsifier
DStyrene/Acrylates Copolymer (hollow spherical, 325 nm) 4.50SPF Booster
EWater (Aqua) (deionized) up to 100Volatile Carrier
Glycerin 3.00Humectant
Disodium EDTA 0.05Chelating Agent
Xanthan Gum (pharma grade) 0.30Thickener (Aqueous)
FPreservative a.n.Preservative
Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Isohexadecane, Polysorbate 80  0.50Viscosity Increasing Agent (Aqueous)
Cyclopentasiloxane, Cyclohexasiloxane 2.50Feel Modification / Enhancement
Aluminum Starch Octenylsuccinate 2.00Deoiling Agent

PREPARATIVE PROCEDURE

1To a secondary vessel add phase A, start mixing, add phase B to A, heat phase AB to 85°C and then add phase C ingredients in order.
2When phase ABC is homogenous, add phase D to it, immediately before transferring oil phase into water phase. Mix well before combining.
3Add Water and Glycerin from phase E to the main vessel, dissolve Disodium EDTA with continued mixing and then add Xanthan Gum.
4Mix until components of phase E are fully incorporated and then heat phase E to 80°C.
5When both phases are homogeneous and at their designated temperatures, slowly add the oil phase ABCD to the water phase E with prop mixing. After 2 minutes, homogenize batch for 3 minutes and then return to prop mixing and begin cooling.
6When batch is < 50°C, add phase F ingredients one by one and continue mixing and cooling until batch is at room temperature.
7Replace any water lost to evaporation, mix until smooth and perform quality assurance checks.

PRODUCT CHARACTERISTICS (25°C)

Appearance Off-white to pale yellow lotion
Viscosity (Brk, RVDV-II, T-D, 20 rpm, after 24 h at room temperature; mPa·s) 4500 - 8500
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

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