A thorough Brazilian hair treatment is expensive but it recovers its cost due to its long lifespan. To ensure that your Brazilian hair treatment lasts its entire complement of life, it is essential to protect the installed hair from swelling. As a result of swelling the hair in the Brazilian hair treatment bloats and looks unsightly. Swelling is caused by liquid entering into and filling up the hair fibers of the Brazilian hair treatment. This causes the cuticles to open up and the entire hair is then exposed to the dirt, dust and grime of the outside environs. The Brazilian hair treatment swells when human hair extensions are saturated with liquid. If this swelling is caused by water, the Brazilian hair treatment reverts to its original shape when the water dries or drains away. The problem occurs when swelling of the Brazilian hair treatment is due to chemicals such as dyes, colors, bleaches, etc. This causes the bonds in the hair to break and can cause permanent and irreversible damage to the Brazilian hair treatment. Moreover, the infection caused as a result of swelling and the subsequent opening of the pores can even permeate down to the natural hair and scalp and spoil it. Chemical swelling is a vicious circle – once the pores open up, they become more receptive to outside liquids, which start entering the hair at a faster rate, causing the Brazilian hair treatment to swell even more, thereby opening the pores still further, and so on. The Brazilian hair treatment becomes brittle and starts breaking even during normal grooming processes. The cuticle scales break away and leave behind split ends and dull hair.