You can treat it like your regular hair, you may use whatever products you would like, although, you don't need as many or as much as before the BKT. You may use a curling iron, or flat iron, don't be surprised if there is a smell of the extra Keratin when using heat. It is normal. You may wash your hair as you normally would, using the keratin shampoo and conditioner, however you may want to wash it less often for the keratin to last longer. But since this is MY blog and my story about my BKT, I will tell you that I wash my hair, either every day or every other day and my BKT is still looking great after 6 MONTHS! It is not quite as great as it was, but I still see great results when I blowdry my hair. :-)