A hair botox contains, as a weight ratio, 5% to 30% of keratin in a weight of 100 g of water. This ratio is preferred as being between 15% and 30% keratin for excessively worn hair, and between 5% and 15% keratin for less worn hair. In the invention, in addition to 5%-30% keratin in 100 g of water, if desired, vitamins, minerals, herbal extracts, other proteins, other than keratin, and materials used in the cosmetic field may be used in a rate of 0.001% to 20% each.
