HHC's pink spray leave in is amazing. You mix it with water and spray on hair and crest or tailbone and rub/comb in. What a good leave in conditioner does is soak into the hair shaft which conditions and makes the hair stronger. This gives the hair a chance to grow longer because it isn't breaking at a certain length. Now I have always used it with horses that are throughly groomed everyday and have a wet brush brushed through their mane and tail feathers (tails were braided and wrapped)/rubbed into crest and tailbone so everything stays very clean. I have seen horses with really brittle, curly, damaged hair grow straight, soft, strong and very long with the HHC's conditioner.