A very complicated product to use for very complicated dosing! It takes very little if the hair is glued cardboard. Apply on wet or dry hair. I personally have a preference for dry but the dosage must really be at least: a drop in the palm of your hand, rub 2 hands together and put on the hair (lengths and ends). The hair is softer and shinier but beware, it's not a miracle either !!!! product, in fact, very economical. This product therefore brings more light but requires a good command of dosing!
