What is the Brazilian Keratin treatment, you ask? Well, It is a smoothing and straightening process that you can get to help your hair be virtually maintenance free and frizz free. It's great for those with hair that tends to be frizzy and responds to humidity poorly, such as mine, and it also gives a lot of added shine to your hair, so it makes it look a lot healthier.
This treatment lasts anywhere from 3-5 months, depending on how often you shampoo your hair, since little by little the treatment does come out of the hair naturally, so if you are a person who doesn't shampoo very often, you may be in luck. The cost for this procedure, which takes about two to two and a half hours usually, depending on the length of your hair, runs an average of about $150 per hour.
This means your total bill will fall between $300 and $400 for the process, and you will also need to buy a special shampoo for it that usually runs about $35 for a large bottle, so when it's all said and done, with the tip and shampoo, you're probably looking at an almost $500 bill, give or take a little. My bill happened to be about $485, and I have long hair. The process took 2½ hours for me, and it wasn't bad at all.
I've had the thermal reconditioning done before too (also known as Japanese straightening), and that process took about five hours all together and cost a little more. It also is supposed to last longer though, and your hair is so poker straight that it may not be in everyone's taste because it lacks body for a while.