Kerastase Chronologiste Masque Intense Regenerant is a revitalizing hair mask that deeply strengthens, nourishes and hydrates hair and scalp. Just take a quarter size amount and apply it to towel dried hair from scalp to ends for 5 minutes then rinse out. Without using any type of conditioner my comb went right through my long hair with no tangles or knots. Has an amazing fragrance of tea rose, light woods and musk which I contribute to a warm amber scent that is just wonderful! This masque helps with the signs of aging hair delivering long lasting smoothness, moisture and shine! My hair feels light and bouncy and just looks amazing like I just stepped out of a salon! Worth the price for this luxurious product that you could probably only get by a professional except now you don't have to!