When going in for Brazilian hair treatment, the first thing which stylists look for are the natural characteristics of the original hair. These are fixed on the basis of the quantity of sebum produced. Sebum is secreted by sebaceous glands which are based near the scalp area close to the roots of the hair. The sebum is carried along the locks right through to the tips of the hair. Based on the quantity of sebum secreted and available, natural hair can be classified into oily, dry, frizzy, fine or normal hair. Brazilian hair treatment, chemical processing and hot styling impact the quality of the sebum and, thereby, the characteristics of the hair. Before selecting the Brazilian hair treatment which suits you best, it is important to determine the personality of the natural hair. The Brazilian hair treatment depends on the type of hair you possess. A Brazilian hair treatment involving layering is best suited for thin, fine straight hair, since it adds extra lushness. A bob can make medium, straight hair to look curly and full. When the Brazilian hair treatment involves coloring of the hair, it increases porosity. This leads to a faster rate of loss of sebum from the hair. Hence, such hair needs extra and gentle care.