Hair relaxation is a chemical procedure to straighten or open the hair. Because of its has powerful assets such as guanidine or ammonium thioglycolate, it is usually used by those with curly or afro hair, which have greater resistance to straighten. The two are approved by Anvisa (National Sanitary Surveillance Agency).

Who loves curls and wants to soften it, the relaxation can lower the volume of the root and make the curvature more defined.

Precautions to perform hair relaxation

Before performing hair relaxation, consider the following:

    • Perform the hair sensibility test to check the strength of the hair. Previous chemicals can attack the hair fiber and not all are compatible with each other. Even if you have already used some or the same guanidine or ammonium thioglycolate product, do the test again.
    • The skin sensibility test should also be done to assess if there is an allergic reaction to the product. This test can be done on the forearm. For more information on the complete procedure, consult your hairdresser.
    • Dyed hair accept chemicals based on glyoxylic acid and carbocysteine better.
    • Ammonium thioglycolate and guanidine are not compatible with each other, although they provide the same result.
    • Hair relaxation modifies the structure of the hair. Once smoothed, it will not return to its original appearance. The best alternative in this case would be Big Chop, which is the total cut of the hair with chemicals.
    • If you have used chemicals such as henna, henna powder or cream, progressive stains and discolourations or thioglycollate, wait at least eight months to perform the hair relaxation.

How is the hair relaxation procedure?

The product should be applied over dry hair. It is very important not to wash it for at least two days before the procedure too, so the hair will not be so damaged, because the oil will protect it. Kerensa has a complete kit to perform the Hair Relaxation, GuaniCare, based on guanidine. You can find the step by step in the description of the product For more information, please contact us: 0800 021 1740.