ZnO-Only Sunscreen SPF 30

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
	SolaFresh™️	Diethylhexyl 2,6-Naphthalate	10.00
	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
B		VP/Eicosene Copolymer	0.75
	Oliwax® LC	Cetyl Palmitate, Sorbitan Palmitate, Sorbitan Olivate	2.00
	Olivem® VS Feel	Cetearyl Alcohol, Cetyl Palmitate, Sorbitan Palmitate, Sorbitan Oleate	2.50
C		Glycerin	2.50
C		Xanthan Gum (pharma grade)	0.20
D	Water	Water (aqua)	Up to 100
E		Trisodium Ethylenediamine Disuccinate (37% active)	0.20
E		Potassium Cetyl Phosphate	1.00
F	Preservative		a.n.

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.

Product Characteristics

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

Looking for more ideas and innovations for your next project? Check out our featured Grow Your Know: Formulate Multi-Functional and Effective Sun Care Products!

Formulation No. JZ14-269

Amrit Kaur2022-05-27T10:28:58-04:0027th May 2022|