[shahroozr23]

Hi Everyone,

Thank you for your responses. I am using a wide variety of surfactants. 

I have used for example the Norfox WFM Blend, and Stepan Mild LSB. these blends could not thicken with either xanthan gum or HEC.

The best blend was the one I came up with:

Sodium Lauryl Sulfoacetate
Cocamidopropyl Betaine
Alpha Step PC-48

The mixture gives good viscosity on its own but when I add my preservative it kills viscosity. (The preservative is Phenoxy and EHG).

Another thing that kills it is high oil content (1%).

@ZivBA, I am going to try Stepan Mild L3 in my formulation.

Let me know if you guys need more info or if you have any other suggestions.