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Formulation

Inorganic sunscreen lotion SPF 20, waterproof

ST 13/18-37

In vivo SPF and water resistance tested formulation. Based on TEGO® Care PBS 6 MB, a fully natural-based, versatile O/W emulsifier for challenging low viscous systems. Finely dispersed Zinc Oxide and Titianium Dioxide due to TEGO® SP 13 Sun Up and ABIL® Wax 9840. With dermofeel® sensolv MB and TEGOSOFT® DEC for a light skin feel.

Phase

Ingredients

%W/W

A

TEGO® Care PBS 6 MB

(Polyglyceryl-6 Stearate (and) Polyglyceryl-6 Behenate)

4.00

TEGO® SP 13 Sun Up

(Poly C10-30 Alkyl Acrylate)

1.50

TEGIN® M Pellets MB

(Glyceryl Stearate)

0.20

TEGO® Alkanol 1618

(Cetearyl Alcohol)

0.20

B

Z-Cote HP 1

(Zinc Oxide (and) Dimethicone)

7.80

Parsol TX

(Titanium Dioxide (and) Silica (and) Dimethicone)

7.20

dermofeel® sensolv MB

(Isoamyl Laurate)

6.00

TEGOSOFT® CT

(Caprylic/Capric Triglyceride )

5.00

TEGOSOFT® DEC

(Diethylhexyl Carbonate )

5.00

ABIL® 350

(Dimethicone )

3.00

ABIL® Wax 9840

(Cetyl Dimethicone )

2.00

dermosoft® Octiol

(Caprylyl Glycol)

0.50

C

Water

50.65

Glycerin

3.00

Xanthan Gum

0.50

D

dermosoft® Pentiol eco

(Pentylene Glycol)

3.00

E

Citric Acid

(50 % sol. in water)

0.45

Processing

1. Homogenize phase B until homogeneous.
2. Add phase B to phase A, heat to 75°C and mix well.
3. Heat phase C to 75°C.
4. Add phase A/B to C with stirring (dissolver disc).
5. Homogenize.
6. Cool with gentle stirring to approx. 35°C and add phase D and E.
7. Homogenize for a short time.

Remarks

SPF: 20 (23.8; in vivo SPF screeningstudy on 4 panelists)

Viscosity

Viscosity (Brookfield DV-I, sp. 93, 10 rpm): ~20 Pa*s

pH Value

7.0 - 7.5

Stability

Proven

Microbiological Safety

Challenge test passed


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