ZnO-Only Sunscreen SPF 30 is a high-performance formula using zinc oxide as its only filter. The combination of HallBrite® BHB and SolaStay® S1 helps to optimize dispersion quality and prevent ROS generation. Natural emollient and structuring agents Olivem® VS Feel, Oliwax® LC and Biochemica® Shea Butter Organic help to greenify the package and add moisturizing benefits. The final product is non-whitening with a smooth, non-greasy skin-feel.
|Phase||Trade Name||INCI Name||% w/w|
|A||HallStar® IPM-NF||Isopropyl Myristate||5.00|
|HallBrite® BHB||Butyloctyl Salicylate||5.00|
|SolaStay® S1||Ethylhexyl Methoxycrylene||3.00|
|Zinc Oxide [Zinc Oxide], Triethoxycaprylylsilane (30-200 nm primary particle size)||20.00|
|Oliwax® LC||Cetyl Palmitate, Sorbitan Palmitate, Sorbitan Olivate||2.00|
|Olivem® VS Feel||Cetearyl Alcohol, Cetyl Palmitate, Sorbitan Palmitate, Sorbitan Oleate||2.50|
|Xanthan Gum (pharma grade)||0.20|
|D||Water||Water (aqua)||Up to 100|
|E||Trisodium Ethylenediamine Disuccinate (37% active)||0.20|
|Potassium Cetyl Phosphate||1.00|
Procedure for ZnO-Only Sunscreen SPF 30
To a secondary vessel add phase A and start mixing. Add phase B with mixing. Heat to 80°C and then add phase C.
To the main vessel add premixture of phase D, start mixing and add phase E. Heat phase DE to 75 – 80°C and then add phase F.
When both phases are homogeneous and at their designated temperatures, slowly add phase ABC to phase DEF with prop mixing.
After 5 minutes of mixing, homogenize batch for 5 minutes, and then start cooling with central mixing.
When batch is < 50°C, add phase G with mixing
Continue mixing until batch is at room temperature, replacing any water lost to evaporation and mixing until smooth.
Appearance (25°C): Off-white lotion
Viscosity (10 rpm, Brk, RVDV-E, T-B, after 24h at room temperature, mPa·s): 3500 – 5500
pH as is: 7.5 – 8.5
Formulation No. JZ14-269