For the first months, the gel will be perfect for hair, even for babies that do not have a lot. Once the hair grows, the shampoo will be even more efficient. The composition of the skin is quite different from the one of the hairs. If we want the best effectiveness, we need to make some distinctions. In addition, there is no economy to make by buying a 2 in 1 formula, the total quantity used will be the same.