Azelaic face cream Separating

Formulating

Azelaic face cream Separating

Posted by Christy30 on February 17, 2022 at 2:46 am

Hi
my name Christiana, I made a face cream with Azelaic acid for acne
Experiment A

Phase %w ingredients INCl name

A 58.1 Distilled water

A .1 Tetrasodium EDTA

A 7 Cetearyl Alcohol/
cetearyl glucoside
A 2 Cetyl Alcohol
A 1.5 Glyceryl stearate SE
A .3 Solagum AX

B 15 Propanediol 1,3
B 2.5 Glycerin

B 2.5 Ethoxydiglycol
B 10 Azelaic acid

C .8 Phenoxyethanol/
Ethythexylglycerin

C .2 Potassium sorbate

I heat phase B in a water bath to about 60c till a clear solution is formed
then phase B is leave to cool to maintain at 40c
Phase A is heated and hold for 20 minutes
Phase A is mixed together with a overhead mixer
phase B was added at 40c
Then I add the phase c
the ph was at 3.7, I add NaoH solution to rise it ph to 4 the cream turn foaming and loss density
i choice monantov 68 MB wax because it work well in PH 3 to 10 but Is a bit soapy, I add glyceryl stearate SE to help reduce the soapy Effect

Experiment B

Phase %W Ingredients
A 69.3 Distilled water

A .2 Sodium gluconate

B 5 Glycerylstearate/

Cetearyl alcohol/
Sodium stearoyl lactylate
B 2 Stearic acid
B 3 Hempseed oil
B 3 Gapeseed oil
B 4 Roseship seed oil

C 5 Propanediol 1,3
C 2 Glycerin

C 3 Ethoxydiglycol
C Azelaic acid

D .5 Tocopherols T50
D 1 Cyclomethicone
Preservative geogardECT
D 1 benzyl Alcohol/salicylic acid

glycerin/sorbic acid

phase A was heated and hold for 20 minutes phase B was heated
phase A was combined with phase B and mix together with a overhead mixer
phase c was mix together by hand to dissolve Azelaic acid and then added in phase A- phase B at 40c
phase D was added
my problem was after one week the Azelaic face cream start to Separate
the emulsifier I used the suppler said is stable in ph of 5 -7 could that be the Reason of separation

please i need help or advise thanks in advance

Christy30 replied 2 years, 3 months ago 1 Member · 0 Replies
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