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Sunscreen Lotion SPF 50

This sunscreen lotion 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, 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 ~ 55, PFA (PPD) ~ 21 performance with critical wavelength 380 nm.

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PhaseINCI Name [INN/USAN] (Other Information)Trade Name% WtFunction
ACaprylic/Capric Triglyceride 10.00Sunscreen Solvent / Emollient
Dicaprylyl Carbonate 3.00Sunscreen Solvent / Emollient
Ethylhexyl Methoxycinnamate [Octinoxate] 7.50UV Filter / Sunscreen Agent
Ethylhexyl MethoxycryleneSolaStay® S1*3.25Photostabilizer
Butyloctyl SalicylateHALLBRITE® BHB*3.00Sunscreen Solvent / Emollient
B4-Methylbenzylidene Camphor [Enzacamene] 3.80UV Filter / Sunscreen Agent
Titanium Dioxide [Titanium Dioxide], Aluminum Hydroxide (60 nm primary particle size) 4.10UV Filter / Sunscreen Agent
CVP/Eicosene Copolymer 1.00Film Former
Glyceryl StearateHALLSTAR® GMS PURE1.85Emulsifier
PEG-100 StearateHALLSTAR® PEG 4400 MS MB1.70Emulsifier
Potassium Cetyl Phosphate, Hydrogenated Palm Glycerides 1.50Emulsifier
DButyl Methoxydibenzoylmethane [Avobenzone] 3.00UV Filter / Sunscreen Agent
EWater (Aqua) (deionized) up to 100Volatile Carrier
Disodium EDTA 0.05Chelating Agent
Acrylates/C10-30 Alkyl Acrylate Crosspolymer 0.22Thickener (Aqueous)
FPreservative a.n.Preservative
Glycerin 3.00Humectant
GPotassium Hydroxide (10% aqueous) 1.10pH Adjuster
HCyclopentasiloxane 2.50Volatile Carrier
Cyclopentasiloxane, C30-45 Alkyl Cetearyl Dimethicone Crosspolymer  2.50Feel Modification / Enhancement

PREPARATIVE PROCEDURE

1To a secondary vessel add phase A, start mixing and slowly add phase B components, in order, to phase A with continued mixing.
2Heat phase AB to 85°C and then add phase C ingredients, in order, with mixing.
3Add phase D to phase ABC and mix until phase D is fully dissolved.
4To the main vessel add the water of phase E, start mixing, add the EDTA salt, and then add the crosspolymer.
5Heat phase E to 80°C and then add premix of phase F to phase E.
6When both phases are homogeneous and at their designated temperatures, slowly add oil phase ABCD to water phase EF with prop mixing.
7Homogenize combined phases intensively, start cooling, and when the batch is at 55°C, add phase G and keep homogenizing intensively.
8After 5 minutes, stop homogenizing, resume sweep mixing and add premix of phase H, mixing well.
9When the batch is uniform, add deionized water to correct for evaporative losses, mixing until a smooth cream.

PRODUCT CHARACTERISTICS (25°C)

AppearanceOff-white, thick lotion
Viscosity (Brk, RVDV II+, T-D, 20 rpm, after 24 h at room temperature; mPa·s)5000 - 8000
pH5.0 - 6.0

*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