alkyl sulfates (like sodium lauryl sulfate or SLS) and the alkyl benzene sulfonates (also known as the alkyl aryl sulfonates like linear alkylbenzene sulfonate, which are mostly used in household cleaning products). (From this post)
We can avoid this feeling in a few different ways...
1. By using surfactants that rinse off cleanly, meaning SLS is probably not an ingredient we wish to include in our facial cleansers.
2. By using lower concentrations of surfactants - no more than 50%, but preferably lower.
3. By adding cationic or non-ionic ingredients - cationic polymers like polyquat 7, honeyquat, or cationic guar gum or non-ionic ingredients like PEG-7 glyceryl cocoate or polysorbate 80 - which also increase mildness. We can include non-ionic water soluble esters - like water soluble shea butter, PEG-7 olivate, Cromollient SCE, or Caprol Micro Express - as emollients and mildness enhancers that will help our products rinse off more cleanly!
Now that we've chosen our surfactants and we've figured out a few ingredients we'd like to include, let's take a quick look at how pH affects our products before we create a sample recipe and add some physical and chemical exfoliants.