Oh my goodness! I just did another hennalucent treatment and this time I decided to leave it in overnight. So I washed my hair and applied it mixed in a little olive oil and went to bed with a plastic cap on my head and a scarf over the plastic cap. When I woke this morning and rinsed it out. WOW! my hair looked like I had a fresh perm. This stuff is amazing girls. It just gets better and better! Now I just need to seal my ends and I am good to go!