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Quench-and-Protect 35 – Broad Spectrum O-W SPF 35 Sunscreen

This oil-in-water formulation was designed to provide superior broad spectrum (SPF/PFA <<3) label SPF 30 performance. SolaStay® S1 (Ethylhexyl Methoxycrylene) in HallBrite® EZ-FLO TDX Plus contributes to photoprotection through stabilization of this titanium dioxide-based formulation by:

  • mitigating the photocatalytic and reactive oxygen species-generating activities of the oxide, and
  • providing very rapid and efficient excited state quenching of Avobenzone, protecting it from photodegradation,

thus improving sunscreen performance.
HallBrite® BHB (Butyloctyl Salicylate) in HallBrite® EZ-FLO TDX and in HallBrite® EZ-FLO TDX Plus contributes to UV filter solubility and enhances product feel.
This formulation was subjected to in vitro analysis and delivered SPF ~40 (30), PFA (PPD) ~17 performance with critical wavelength 380 nm.

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PhaseINCI Name [INN/USAN] (Other Information)Trade Name% WtFunction
AHomosalate [Homosalate] 10.00UV Filter / Sunscreen Agent
Ethylhexyl Salicylate [Octisalate] 5.00UV Filter / Sunscreen Agent
BButyloctyl Salicylate, Titanium Dioxide (nano) [Titanium Dioxide] (40%), Triceteareth-4 Phosphate, Dimethicone Crosspolymer, SilicaHALLBRITE® EZ-FLO TDX4.00UV Filter/Sunscreen Agent / Carrier System
Butyloctyl Salicylate, Titanium Dioxide (nano) [Titanium Dioxide] (23%), C12-15 Alkyl Benzoate, Ethylhexyl Methoxycrylene, Triceteareth-4 Phosphate, Dimethicone Crosspolymer, SilicaHALLBRITE® EZ-FLO TDX PLUS*11.00UV Filter/Sunscreen Agent / Photostabilizer / Carrier System
CCetearyl AlcoholHALLSTAR® TA-1618 CETEARYL ALCOHOL0.50Thickener (Nonaqueous)
VP/Eicosene Copolymer 2.00Film Former / Water Resistance Enhancer
Glyceryl StearateHALLSTAR® GMS PURE1.00Emulsifier
PEG-100 StearateHALLSTAR® PEG 4400 MS0.85Co-emulsifier
Potassium Cetyl Phosphate, Hydrogenated Palm Glycerides 1.50Emulsifier
DButyl Methoxydibenzoylmethane [Avobenzone] 3.00UV Filter / Sunscreen Agent
EWater (Aqua) (deionized) up to 100Volatile Carrier
Glycerin 3.00Humectant
FDisodium EDTA 0.05Chelating Agent
Xanthan Gum (pharma grade) 0.30Thickener (Aqueous)
GPreservative a.n.Preservative
Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Isohexadecane, Polysorbate 80  1.00Viscosity Increasing Agent (Aqueous)
Cyclopentasiloxane 3.00Feel Modification / Enhancement
Aluminum Starch Octenylsuccinate 2.00Deoiling Agent

PREPARATIVE PROCEDURE

1To a secondary vessel add phase A, start mixing, slowly add phase B, heat to 85°C and then add phase C items in order.
2When phase ABC is homogeneous add phase D items to it and continue mixing until dissolved.
3To the main vessel add phase E, start mixing and add phase F items in order.
4When solids of phase F are fully incorporated, heat phase EF to 80°C.
5When both phases are homogeneous and at their designated temperatures, slowly add phase ABCD to phase EF with prop mixing.
6After 2 minutes mixing, homogenize batch for 3 minutes and then resume prop mixing and start cooling batch.
7When batch is below 50°C add phase G ingredients one by one with mixing.
8Continue mixing until batch is at room temperature, replacing any water lost to evaporation and mixing until smooth.

PRODUCT CHARACTERISTICS (25°C)

AppearanceOff-white to pale yellow fluid cream
Viscosity (Brk, RV DV II, T-D, 20 rpm, after 24h at room temperature; mPa∙s)9000 - 13000
pH5.5 - 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