I was sent this by My Garnier Community in exchange for my honest review.This was sent to me, as a trio bundle, along with the shampoo and mask. This was used after shampooing and while hair was still wet. The instructions don't say about leaving it in at all, but I always leave my conditioner in for at least a couple of minutes, to work its' magic, combed through with a wide toothed comb so that all of the lengths are covered with the product. Then rinsed thoroughly. I have found that my hair has got considerably dryer on the lengths as it's got longer, so I do tend to use quite a bit of conditioner on mine, with this one, I found I don't need to use quite as much, as it seemed to go a bit further than most others.I love the smell of this one, not too overpowering, just clean and fresh. After drying, my hair is definitely better than before use, shiny, smoother and not so dry feeling.Up to 72 hours of shine and smoothnessHair fibre is smoothed and reflects lightHair feels hydratedSilicone free97% natural origin ingredientsI love the way it makes my hair feel and look and will definitely be buying again.