Simply Smooth SPF 50

This oil-in-water sunscreen lotion provides SPF 50 UV protection using only mineral UV filters — specifically non-nano zinc oxide.  Despite its high ZnO load (25%), it is a quick-absorbing formula with flowable viscosity. HallBrite® ZDX Clear enables a high SPF performance and, in combination with Biochemica® Craft Shea Butter, provides a stable foundation and smooth texture. In vivo testing in a US laboratory (3 subjects) yielded static SPF 60, with 40 minute water resistance of SPF 50. In vitro PFA (PPD) ~18 performance with critical wavelength = 372 nm. UVA1/UV = 0.80.

PREPARATIVE PROCEDURE

1	To a secondary vessel add phase A and start mixing, Heat to 80°C and then add phase B.
2	To the main vessel add premixture phase C, start mixing and add phase D with mixing. Heat phase to 75°C.
3	When both phases are homogeneous and at their designated temperatures, slowly add phase AB to phase CD with prop mixing.
4	After 5 minutes start cooling batch and when batch is below 50°C add phase E items one by one with mixing.
5	Continue mixing until batch is at room temperature, replacing any water lost to evaporation and mixing until smooth.
6	Adjust pH to 7.0-7.5 with phase F if needed

PRODUCT CHARACTERISTICS (25°C)

Appearance	Off-white lotion
Viscosity (20 rpm, Brk, RV DV-II, T-D, after 24h at room temperature; mPa∙s):	8000 - 10000
pH (as is)	7.0 - 7.5