The English soap equivalent of soap is believed to originate from the Celtic Saip, which called soap from animal fat and vegetable ash. Another legend of the origin of the soap and its English name soap relates to Mount Shap on which the ancient Romans sacrificed animals to the Gods. At the foot of this mountain is the River Tiber, where clothes were constantly washed. The animal fat mingled with the ashes of the scrap, and it was washed away by the rains. The water in the river splashed and the women, who were washing their clothes, noticed that all the dirt was leaching perfectly.
By II m.e.a. Greek doctor Galen mentions soap as a medicine that cleanses the body. And only in II m.e.a. soap is mentioned as a hygiene tool. Then, after the collapse of the Roman Empire, soap was forgotten for several centuries, which, incidentally, caused terrible epidemics in Europe in the Middle Ages.
The soap only reappeared in the 13th century in France and England, and was made by noble families only by pharmacists who knew all the subtleties of its manufacture.