A proper installation of weaves using a Brazilian hair treatment involves creating a track near the scalp, all around the hair line. The hair extensions are sewn onto this track, with natural hair lying over it and covering it to make it look natural. The method has its disadvantages. At times, if the Brazilian hair treatment is not done properly, the hair from the extensions will fall away or damage the natural hair. Also, the weight of the added extensions on the scalp can either result in undue shedding of the natural hair or may also end up in causing headaches. In rare cases, the chemicals used in a Brazilian hair treatment may result in allergies. These disadvantages of Brazilian hair treatments should be discussed thoroughly with the salon owner or stylist to avoid unpleasant shocks later. The training, education and experience of the hair stylist come into play when going in for a Brazilian hair treatment. The stylist should also be well-versed with the latest techniques by staying in touch with the latest beauty trends across the world. For a Brazilian hair treatment, proper training and education are vital for success. If you choose to go to a hair stylist for getting a Brazilian hair treatment and the stylist is not properly trained or experienced, the results could be very disappointing.