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Broad Spectrum O/W SPF 40 Sunscreen Cream

This sunscreen lotion formulation was designed to provide broad spectrum (SPF/PFA ≤3) label SPF 40 performance. SolaStay® S1 provides very rapid and efficient excited state quenching of Avobenzone, protecting it from photodegradation, while also mitigating the photocatalytic and reactive oxygen species generating activities of the oxide, improving sunscreen performance. HallBrite® BHB aids UV filter solubility and enhances product feel. This formulation was subjected to in vitro analysis and delivered SPF ~ 40, PFA (PPD) ~ 29 performance with critical wavelength 380 nm.

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PhaseINCI Name [INN/USAN] (Other Information)Trade Name% WtFunction
AEthylhexyl MethoxycryleneSolaStay® S1*3.00Photostabilizer
Ethylhexyl Salicylate [Octisalate] 5.00UV Filter / Sunscreen Agent
Diisobutyl AdipateHALLTRESS® DIBA SPECIAL6.00Emollient / Sunscreen Solvent
Butyloctyl SalicylateHALLBRITE® BHB*5.00Emollient / Sunscreen Solvent
BTitanium Dioxide [Titanium Dioxide], Aluminum Hydroxide (60 nm primary particle size) 3.50UV Filter / Sunscreen Agent
CCetearyl AlcoholHALLSTAR® TA-1618 CETEARYL ALCOHOL0.50Thickener (Nonaqueous)
VP/Eicosene Copolymer 1.00Film Former
Glyceryl StearateHALLSTAR® GMS PURE1.35Emulsifier
PEG-100 StearateHALLSTAR® PEG 4400 MS MB1.00Co-emulsifier
Potassium Cetyl Phosphate, Hydrogenated Palm Glycerides 2.00Emulsifier
DButyl Methoxydibenzoylmethane [Avobenzone] 3.00UV Filter / Sunscreen Agent
EWater (Aqua) (deionized) up to 100Volatile Carrier
Disodium EDTA 0.05Chelating Agent
Xanthan Gum (pharma grade) 0.30Thickener (Aqueous)
Glycerin 3.00Humectant
FPreservative a.n.Preservative
Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Isohexadecane, Polysorbate 80  2.00Thickener (Aqueous)
Cyclopentasiloxane 3.00Feel Modification / Enhancement
Aluminum Starch Octenylsuccinate 2.00Deoiling Agent

PREPARATIVE PROCEDURE

1In secondary vessel add phase A and start mixing. Disperse phase B with continue mixing.
2Heat AB to 85°C and then, add phase C with mixing.
3Add phase D into ABC and mix well until phase D is dissolved.
4Add water and glycerin of phase E to the main vessel, dissolve EDTA with mixing and then add Xanthan Gum.
5When solids of phase E are fully incorporated, start heating to 80°C.
6When both phases are homogenous and at temperature, slowly add oil phase (ABCD) to the water phase (DE) with prop mixing.
7Start homogenizing for 3 minutes. Return to prop mixing, and start cooling down until room temperature.
8Add phase F ingredients when batch < 40°C with mixing. Replace any water lost to evaporation, and mix until smooth.

PRODUCT CHARACTERISTICS (25°C)

AppearanceOff white cream
Viscosity (Brk, RVDV-II, T-D, 20 rpm, after 24 h at room temperature; mPa∙s)15000 - 25000
pH5.5 - 6.5
Stability (45°C)pass three months
Stability (three freeze-thaw cycles)pass

*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