I like a lot of the other suggestions such as Olaplex, Pureology, Christopher Robin, etc. Personally, I use a set from L'Occitane along with a hair mask. My hair was colored at the time, but it did wonders repairing my "straw hair", an unfortunate side effect I encountered twice while on vacation. One was from the Dead Sea in Israel and the other was from a trip to the Blue Lagoon in Iceland. All of those minerals leave your skin super smooth, but it's terrible on your hair!