Sun Screen Lotion – SPF 30

 

This is a simple sunscreen lotion which uses two sunscreen filters, items 5 and 6, in addition to vitamin E, item 7. The formulation is an emulsion and requires the use of heating equipment to prepare it. Suitable heating equipment is needed and heat handling protective clothing, face shield and heat gloves are highly recomended. 

 

All ingredients are readily available from many manufactures across the world. .

 

Item No

Ingredient Name

% wt

Typical Form

Purpose

1

Phase A

 

 

 

2

Lauryl glucoside

          4.00

Liquid/solution

 Surfactant

3

Cetearyl alcohol

          2.00

Paste

 Emulsifier

4

C12-15 alkyl benzoate

          2.00

Liquid

 Smooth feel additive

5

Octocrylene

        10.00

Liquid

 Sun Screeen

6

Butyl methoxydibenzoylmethane

          3.00

Liquid

 Sun Screeen

7

Tocopherol

          0.50

Liquid

 Vitamin E

8

Xanthan gum

          0.30

Powder

 Thickener

9

Magnesium aluminum silicate

          0.70

Powder

 Thickener

 

 

 

 

 

 

Phase B

 

 

 

10

Water

        67.50

Liquid

Diluent

11

Glycerin

          4.00

Liquid

Humectant

 

 

 

 

 

 

Phase C

 

 

 

12

Phenoxyethanol

          1.00

Liquid

 Preservative

 

 

 

 

 

 

Phase D

 

 

 

13

Ethanol

          5.00

Liquid

Diluent

 

Adjust the formulation to pH 6.0 – 7.0 with a solution of citric acid.  Fragrance may be added with Phase D.

 

Total batch 100.0 grams

 

Preparation Procedure:

 

In a suitable formulation vessel and under steady mixing add in numerical order, mix and heat all ingredients in Phase A to 80-85°C until uniform. Heat Phase B ingredients in a separate vessel to 80-85°C and add to Phase A while mixing. Allow the resulting emulsion to cool while mixing. Avoid incorporation of air. Homogenize or mix very briskly with a suitable mixer or homogenizer at approx. 55°C. Stir while cooling to 40°C and add phase C and phase D one after another. Stop stirring at 30°C and let stand overnight.

 

All ingredient amounts are given assuming the ingredients were supplied 100% pure. Formulators are advised to measure the total active mass of their ingredients and adjust the composition with water.

 

This document was prepared by our technical advisors. Visit Formula Scan for additional formulations