[imanebouziane]

PhilGeis said:

what is pH?

PH IS 5,5

[imanebouziane]

It's a moisturizer cream containing :

water
EDTA
phenoxyethanol 0,4%
urea

glycerin
xanthan gum

Shea butter
céteareth 20
CETYL ALCOOL
stearic acid
olive oil
squalane
calendula oil

panthenol
vit E
EO
COSGARD( dehydroacetique and  alcool benzylique)0.6%
do you think that the preservative system is effective? sufficient?

[imanebouziane]

SALUT 
Microformulation pourriez vous nous expliquer pourquoi le conservateur est non approuvé

[imanebouziane]

Greetings experienced people????

I formulated an o/w cream, and I did the stability tests, and it is stable, and I wanted from the same formula to reduce 4% of the water and to put niacinamide instead, so there the cream certainly has a very good texture but testing it with centrifugation at 3500 rpm for 30 min then there is a separation. can someone guide me? I tried two formulation methods 1: dilute niacinamide in the water of the aqueous phase and emulsify by controlling the temperature (not exceeding 75°C) and the 2nd: add niacinamide to the cold phase but always separation of the emulsion. what is wrong here?