[beabatres]

Thanks @Syl and @Cafe33 for these great comments.  

1) I will try then increasing detergency with greater SCI proportion and reducing the cetyl / stearic content. I initially increased these to “dilute the bar” in an attempt of achieving a milder product. 

2) I will run numbers on how much more BTMS-25 I can add, since it is almost the most expensive material in the formulation (after the preservative) 

3) Thanks for the comment on glycerine, at present the bar is working pretty well in terms of structure, I have a bit over 12 uses and the structure has been holding up, will consider this as a troubleshooting input in case this deteriorates. 

4) Will reduce oil content as recommended. 

5) Preservative, I am using Cosgard which I understand is sold mostly as Geogard 221 (Benzyl alcohol, Dehydroacetic acid), although I find that the aesthetics of the bar improve dramatically if I pour hot in molds, so I am thinking of replacing it with Optiphen which allows me +15°C in the mix temperature. 

6) I am using colloidal oatmeal and I haven’t had any structural issues yet, will take in consideration as I test formulations with the modified proportions of rheology modifiers & oils.  

I truly appreciate the comments, I will design & test some new formulations with these tips   

[beabatres]

Thanks @Syl will try to reduce from 1:1 to 2:1 SCI vs. SCS