Yes, the Leave in Conditioner Maintenance Treatment is a great complement to the Formaldehyde Free Keratin. It can be applied twice a month to reinforce and renovate the effects of the Keratin. The Argan Oil Serum is another amazing product that with just a few drops makes your hair radiant, soft and manageable controlling the frizz that comes with the humid weather. We also recommend trying our Hair Reconstructor Mask with a blend of nutrients and vitamins that nourish and completely restore each strand of hair.