Well, for about 3-4 months I use the Bio Shampoo pH 7.7 now consistently and my pimples are gone.
I want the shampoo does not speak well, have nothing to do with the manufacturer, but it is a fact.
The shampoo has freed me before pimples on the scalp.
Probably affects the basic pH content the frequent hair washing contrary.
In addition, the "ingredient list" relatively manageable and not cluttered like so many "commercial" shampoo from the major airline manufacturers.
Since then, the pimples are gone to buy this shampoo regularly here on Amazon and am satisfied.
One star deduction because the price is not exactly cheap.