Body wash - unwanted sensorial
I’ve been experimenting recently with formulae for shower body wash systems, trying to compare different surfactants. My actual product is based on Plantaren APB (ammonium based) which is pretty good but I can still just about detect this effect.
For instance this reference formula using the usual SLS combination:
SLS 15%, SLES (20Mol) 26%, CAPB 6%, glycerine 3% Q/S water.
This when applied to the skin in the shower gives an unpleasant “heating” sensation as if it’s warming up as applied.
Now, I know that laundry detergent heats up when you add water so I did an experiment to see if indeed the temperature changed when I added some of the formula at 30C to water at 30C (room temp) and there was no change at all. So I assume that this sensation of heating is actually skin irritation.
I’m going to try a couple of sulphate free formulae next.
Your thoughts please?
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