Can you color your hair after keratin treatment?

Depending on the type of keratin treatment used, you should be able to color hair following a treatment. Keratin is the main type of protein that is found in hair. Protein is what give hair its strength, and also gives color something to bond to. It is often a good idea to do a protein treatment both before and after a coloring service to keep your hair strong and healthy and to help your color to last.