Beware of all such, and especially of tar soaps, for the black color and the strong odor of tar can cover up any amount of bad quality.
Medicated soaps (soaps containing medicines) are also best let alone.
They are only fit to be used on the advice of a doctor.

Most of them are out and out humbugs, and make up for their richness in drugs by their poorness in good, pure fat and alkali.

Moreover, what may suit one particular diseased condition of the skin is quite as likely to be injurious as helpful to another.

Any drug which has the power of curing disease is almost certain to be irritating to a healthy skin; and nothing can be put into a soap beyond pure, sweet fat, or oil, and good soda, which will make it any better, or more wholesome, for a healthy skin.

If your skin be red, or itchy, or scaly, or out of condition in any way, go to a doctor and get the appropriate treatment for that particular disease, instead of smearing on the surface of your body some drug of which you know nothing, in the hope of its being the proper thing for the little patch of diseased skin.
Avoid Using Skin Brushes.