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Broad Spectrum SPF 30 Sunscreen Cream

This formulation was designed to provide superior broad spectrum (SPF/PFA <<3) label SPF 30 performance. SolaStay® S1 is incorporated to mitigate the photocatalytic and reactive oxygen species generating activities of Titanium Dioxide and to rapidly and efficiently quench the excited states of Avobenzone, protecting it from photodegradation, and so improve sunscreen performance. HallBrite® BHB and HallTress® DIBA Special aid wetting and dispersion of the Titanium Dioxide and contribute to UV filter solubility and enhanced product feel. This formulation was subjected to in vitro analysis and delivered SPF ~35, PFA (PPD) ~16 performance with critical wavelength 379 nm.

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PhaseINCI Name [INN/USAN] (Other Information)Trade Name% WtFunction
AEthylhexyl MethoxycryleneSolaStay® S1*2.00Photostabilizer
Butyloctyl SalicylateHALLBRITE® BHB*5.00Sunscreen Solvent / Emollient
Diisobutyl AdipateHALLTRESS® DIBA SPECIAL5.00Sunscreen Solvent
BTitanium Dioxide [Titanium Dioxide], Aluminum Hydroxide (60 nm primary particle size) 2.00UV Filter / Sunscreen Agent
CCetearyl AlcoholHALLSTAR® TA-1618 CETEARYL ALCOHOL1.00Emulsion Stabilizer
VP/Eicosene Copolymer 1.50Film Former
Glyceryl StearateHALLSTAR® GMS PURE0.90Emulsifier
PEG-100 StearateHALLSTAR® PEG 4400 MS0.85Emulsifier
Potassium Cetyl Phosphate, Hydrogenated Palm Glycerides 1.50Emulsifier
DEthylhexyl Triazone 1.20UV Filter / Sunscreen Agent
Butyl Methoxydibenzoylmethane [Avobenzone] 2.00UV Filter / Sunscreen Agent
EWater (Aqua) (deionized)  up to 100Volatile Carrier
Disodium EDTA 0.05Chelating Agent
Xanthan Gum (pharma grade) 0.30Thickener (Aqueous)
FPreservative a.n.Preservative
Glycerin 3.00Humectant
GAcrylamide/Sodium Acryloyldimethyltaurate Copolymer, Isohexadecane, Polysorbate 80  1.00Thickener (Aqueous) / Emulsion Stabilizer

PREPARATIVE PROCEDURE

1To a secondary vessel add phase A, start mixing, slowly add phase B, and then heat phase AB to 85°C.
2Add phase C ingredients, in order, to phase AB. When phase ABC is homogeneous add phase D ingredients, mixing until they are fully dissolved.
3Add the water from phase E to the main vessel, dissolve the Disodium EDTA and, with continued mixing, disperse the Xanthan Gum.
4When Xanthan Gum is fully incorporated, start heating phase E to 80°C and add premix of phase F to phase E.
5When both phases are homogeneous and at their designated temperatures, slowly add oil phase ABCD to water phase EF.
6After 2 minutes prop mixing, homogenize for 3 minutes, resume prop mixing and begin cooling batch.
7When batch is below 50°C, add phase G to batch and continue mixing and cooling until at room temperature.
8Replace any water lost to evaporation, mix batch until smooth and perform quality assurance checks.

PRODUCT CHARACTERISTICS (25°C)

Appearance Off-white to pale yellow cream
Viscosity (Brk, RVDV-II, T-D, 20 rpm, after 24 h at room temperature; mPa·s) 5000 - 8300
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