After using the Iles Formula shampoo apply the Iles Formula conditioner. Apply the conditioner to mid length and ends of the hair, then comb through for even distribution. The comb is the vehicle that will deliver to the roots precisely what is needed. Rinse. Think of this conditioner as nutrition for the hair, a little residue left in the ends of brittle dry hair won’t harm, it will feed the hair with nothing but goodness.