Botea Pure Tonic Shampoo. 6.0. Weakened hair growth is caused by a shortage of oxygen. The hair is fed with oxygen via the hair root, in the follicle. So a bad blood circulation to the hair root is the main cause of weakened hair growth. Tonic Shampoo 6.0 and Tonic Fluid 6.4 contain powerful agents like extracts of ginseng and vitamins, which improve the blood circulation and consequently stimulate the transport of oxygen to the hair. Tonic Fluid 6.4 contains these agents in a higher concentration and is used as a short term treatment.
