I am black with 4a/b type natural hair and this is the only product that got my hair straight and silky without a relaxer. I left it in for a little over 48hrs and flat ironed daily, when I washed it out my hair was in loose waves so I blow dried and flat ironed again using the flat iron spray from the same brand. My hair was light bouncy and most importantly, it stayed straight overnight.Usually when I flat iron before I can even finish my hair reverts because I live in a hot climate but its has been two days and and my hair is still straight without straightening again.Overall, I am happy with the results but I am not sure if I would use it again due to the amount of heat needed to get results.