Cool Can I Color Hair After Keratin Treatment References. Web after a keratin treatment, your hair needs time to go through the bonding process, and you should stay away from hair products and hair dye for at least a few days. Web it’s usually encouraged to wait at least 2 weeks after the keratin treatment to dye your hair again, simply because if you do so earlier your hair might not take the color as well as usual.
Colouring the hair right before the bkt is okay, but you should take into account that the colour will get lighter during the treatment. Keratin holds the weight of your hair well, and hence blow dryers or flat. As you can see, keratin treatments create a dramatic difference in the texture of the hair.
