City Defense Lotion

Hallstar

This water-in-oil sunscreen lotion provides broad spectrum (SPF/PFA ≤ 3), label SPF 50 performance without using organic UV filters. HallBrite® BHB in HallBrite® EZ-FLO ZDX aids wetting and dispersion of the Zinc Oxide and contributes to enhanced product feel. This formula was subjected to in vitro analysis and delivered SPF ~53, PFA (PPD) ~18 (PA++++), performance with critical wavelength 379nm.

Phase

Product

INCI Name

Supplier

Volume

HallStar® OP1

Ethylhexyl Palmitate

10.00

Sensolene®*1

Ethylhexyl Olivate

5.00

HallBrite® EZ-FLO ZDX*1

Zinc Oxide [Zinc Oxide] (non-nano) (60%), Butyloctyl Salicylate, Triceteareth-4 Phosphate, Trimethoxycaprylylsilane

15.00

Cetyl PEG/PPG-10/1 Dimethicone

3.00

Dimethicone (50 cSt)

6.00

Titanium Dioxide [Titanium Dioxide], Aluminum Hydroxide (60 nm primary particle size)

5.50

Olivem® 9001

Sorbitan Olivate

1.00

Styrene/Acrylates Copolymer (hollow spherical, 325 nm)

3.00

Water (Aqua) (deionized)

to 100

Glycerin

6.00

Disodium EDTA

0.05

Xanthan Gum (pharma grade)

0.20

Preservative

a.n

Aluminum Starch Octenylsuccinate

2.00

Preparation:

Add phase A to the main vessel and start mixing. Add phase B and heat to 80°C. Add phase C and mix until uniform. Add phase D to a secondary vessel and start mixing. Add phase E items in order. Heat to 80°C. When both phases are homogenous at their designated temperature, start homogenizing phase ABC. Very slowly add phase DE. Begin cooling to room temperature. When batch is below 50°C, add phase F. Continue mixing until uniform and at target temperature.

Notes:

Appearance: White lotion Viscosity (Brk, DV II, T-D, 20 rpm, after 24 hours at room temperature; mPa∙s): 4000–6500

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