Tolga
New member
Can you leave keratin in hair overnight?
Original Keratin Treatment Formula - Wait from 3 hours to overnight. Anyone who desires to stay with the treatment for 3 days may do so, there is no harm. In fact, results may improve. Then wash the hair with Sulfate-free shampoo and conditioner.
Original Keratin Treatment Formula - Wait from 3 hours to overnight. Anyone who desires to stay with the treatment for 3 days may do so, there is no harm. In fact, results may improve. Then wash the hair with Sulfate-free shampoo and conditioner.