The reason for this is that during pregnancy or breastfeeding , a woman is going through many hormonal changes – hence many changes in the texture, degree of curl and frizz of the hair. So what often happens is that the product will seem to work one day and not on another because the hormonal fluctuations.
The constant change of hormonal levels affecting the individual at this time may alter the result of the treatment, and affect its performance. The treatment may even work, but not last as long because of this hormonal imbalance.
To get the best value for your money, we recommend waiting until after this period to get a keratin treatment done.