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Broad Spectrum SPF 20 Sunscreen Cream

This formulation was designed to provide broad spectrum (SPF/PFA ≤3) performance. HallBrite® ISO 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 aids wetting and dispersion of the Titanium Dioxide and contributes to UV filter solubility and enhanced product feel. This formulation was subjected to in vitro analysis and delivered SPF ~26, PFA (PPD) ~10 performance with critical wavelength 379 nm.

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PhaseINCI Name [INN/USAN] (Other Information)Trade Name% WtFunction
AOctyldodecyl MethoxycrylenePrivate: HALLBRITE® ISO*2.50Photostabilizer
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 PURE1.40Emulsifier
PEG-100 StearateHALLSTAR® PEG 4400 MS1.20Emulsifier
Potassium Cetyl Phosphate, Hydrogenated Palm Glycerides 2.20Emulsifier
DButyl Methoxydibenzoylmethane [Avobenzone] 2.50UV 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

1To a secondary vessel add phase A, start mixing, slowly add phase B and begin heating phase AB to 85°C as phase B disperses.
2When phase B is fully dispersed, add phase C ingredients to phase AB and when fully dispersed add phase D to phase ABC.
3Add the water from phase E to the main vessel, dissolve Disodium EDTA and, with continued mixing, add 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 with prop mixing.
6Homogenize combined phases for 3 minutes and then return to prop mixing, continuing to cool to room temperature.
7Replace any water lost to evaporation, mix batch until smooth and perform quality assurance checks.

PRODUCT CHARACTERISTICS (25°C)

Appearance Off-white cream
Viscosity (Brk, RVDV-II, T-D, 20 rpm, after 24 h at room temperature; mPa·s) 3800 - 6300
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