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Sunscreen Lotion SPF 40

This sunscreen lotion formulation was designed to provide superb broad spectrum (SPF/PFA <<3) SPF 40 performance. SolaStay® S1 and SolaStay® P1 provide very rapid and efficient excited state quenching of Avobenzone, protecting it from photodegradation, and so improve sunscreen performance. HallBrite® BHB and HallTress® DIBA Special contribute to UV filter solubility and enhanced product feel. This formulation was subjected to in vitro analysis and delivered SPF ~ 40, PFA (PPD) ~ 23 performance with critical wavelength 377 nm.

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PhaseINCI Name [INN/USAN] (Other Information)Trade Name% WtFunction
AEthylhexyl MethoxycryleneSolaStay® S1*2.00Photostabilizer
Polyester-25SolaStay® P1*4.00Photostabilizer
Ethylhexyl Salicylate [Octisalate] 5.00UV Filter / Sunscreen Agent
Butyloctyl SalicylateHALLBRITE® BHB*5.00Sunscreen Solvent / Emollient
Diisobutyl AdipateHALLTRESS® DIBA SPECIAL4.00Sunscreen Solvent
Homosalate [Homosalate] 15.00UV Filter / Sunscreen Agent
BBenzophenone-3 [Oxybenzone] 6.00UV Filter / Sunscreen Agent
Butyl Methoxydibenzoylmethane [Avobenzone] 3.00UV Filter / Sunscreen Agent
CCetearyl AlcoholHALLSTAR® TA-1618 CETEARYL ALCOHOL0.50Emulsion Stabilizer
VP/Eicosene Copolymer 1.00Film Former
Glyceryl StearateHALLSTAR® GMS PURE2.20Emulsifier
PEG-100 StearateHALLSTAR® PEG 4400 MS2.00Emulsifier
Potassium Cetyl Phosphate, Hydrogenated Palm Glycerides 2.10Emulsifier
DWater (Aqua) (deionized) up to 100Volatile Carrier
Disodium EDTA 0.05Chelating Agent
Xanthan Gum (pharma grade) 0.25Thickener (Aqueous)
EPreservative a.n.Preservative
Glycerin 3.00Humectant

PREPARATIVE PROCEDURE

1To a secondary vessel add phase A and start mixing. Disperse phase B ingredients individually in Phase A with continued mixing.
2Heat phase AB to 85°C and then add phase C ingredients, in order, with mixing.
3Add water of phase D to the main vessel, dissolve EDTA and, with continued mixing, add Xanthan Gum.
4When Xanthan Gum is fully incorporated, start heating this phase D to 80°C and add premixed phase E.
5When both phases are homogeneous and at their designated temperatures, slowly add oil phase ABC to water phase DE with prop mixing.
6Homogenize combined phases for 3 minutes and then resume prop mixing and start cooling batch.
7When batch is at room temperature, replace any water lost to evaporation and mix until smooth.

PRODUCT CHARACTERISTICS (25°C)

Appearance Pale yellow thick lotion
Viscosity (Brk, RVDV-II, T-D, 20 rpm, after 24 h at room temperature; mPa·s) 8000 - 14000
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