henkverhaar said:
Oh come on, please, and stduy some real soap and cosmetics science before you start blabbering chemical nonsense.
Shoot. I wrote a lengthy reply, and when posting it, I lost my connection.
I'll redo briefly: first of all, check out my article (sticky) on here, on shaving soap ingredients. If you want to know exactly what's in my shaving soap, it's all on the ingredient list on my label. And no, you cannot make a shaving soap (or improve it) by relying on SLS or SLeS, which incidentally are not bad per se, and certainly not bad for you skin, at least not more than other degreasing agents of similar emulsifying strength (whether detergents, or soaps, etc.).
SLS and SLeS are used as the basis of many, if not most, synthetic detergents (syndets), including washing up liquids, shampoos, and many toilet 'soap' bars, because they offer improved degreasing action, and do not deteriorate in or generate / leave soap scum with hard water.
Nothing wrong with tallowates either - you should probably check what a tallowate actually is. In fact, tallowate is one of the better normal ingredients of traditional quality shaving soaps.
Skin irritation after shaving is, in most cases, the result of the abrasive action of shaving itself. It can be minimized, or avoided, by good technique. In the few cases where the irritation is caused by a soap, it is either because of its strong degreasing action (which is highly unlikely in a GOOD shaving soap, much more likely in any bath soap, including a 'fake' shaving soap like your Highland soap), or, more often, due to fragrance ingredients. If you truly have irritation from soap, you should try an unscented shaving soap.