Formula 3. SPF 30 natural sun lotion

A.
Polyglyceryl-3 Polyricinoleate (Cithrol PG3PR, Croda), 3.00% w/w
Bertholletia Excelsa Nut Oil (Crodamazon Castanha do Brazil, Croda), 4.00
Cetearyl Ethylhexanoate (and) Isopropyl Myristate (Crodamol CAP, Croda), 8.00
Squalane (Pripure 3759, Croda), 3.00
Ethylhexyl Palmitate (Crodamol OP, Croda), 2.00
Euphorbia Cerifera (Candelilla) Wax, 1.50

B.
Titanium Dioxide (and) Caprylic/Capric Triglyceride (and) Polyhydroxystearic Acid (and) Stearic Acid (and) Alumina (Solaveil XT-300, Croda), 20.00

C.
Water (aqua), qs
Magnesium Sulfate Heptahydrate, 0.70
Glycerin (Pricerine, Croda), 4.00

D.
Preservative, qs

Procedure: Combine A and heat to 85°C. Combine C and heat to 85°C. Add B to A with stirring and maintain temperature. Add C to AB slowly with intensive stirring. Homogenize for 1 min. Stir and cool to RT adding D below 40°C. Appearance = white lotion; viscosity = 24,300 mPas (Brookfield RVDV1, spindle 5, 5 rpm, 1 min); in vivo SPF = 39; UVA/UVB ratio = 0.63; label SPF = 30; in vitro UVAPF = 10; ratio label SPF/UVAPF = 3.0.