Selvet Shampoo (VET) is out of the trade. Someone asked us if we could not make it ourselves.

I do not understand well what you mean by emulating? Selenium disulfide (S) is a solid substance, insoluble in water as well as in oil. It also cannot be solubilized. S must be suspended. Bentonite can be used as a solvent. I would say 1 a 2% a bit depending on how viscous your shampoo base will be. Triethanolaminelauryl sulfate may be an alternative to nalauryl sulfate? That Nalaurylethersulfate is no longer available I doubt. It used to be the brand name Texapon N40 now it has become Texapon NSO. There is a slight difference in the amount of salt. This product is also a good alternative better than triethanolaminelauryl sulfate. If you look in the booklet Galenic formulary then you will find several shampoo compositions including the shampoo simplex, which could serve as a basis. In the preparation, you must begin to mix with bentonite and add to this powder mixture under "mixes" hot water until you obtain a homogeneous pink dispersion. Then the other ingredients can be added.