I had already tested it with my sister but very briefly and I was thrilled. But since I bought it I do a thorough treatment. Twice a week is I sleep with and a plastic bag over his head (it must not glamorous it takes) or so from morning to night on my head and I rinse after it is just extra !!!!! I had burnt hair and especially my wick death because of the iron I cut I put oils I tried everything but I found THE product to the top so I let go no more. Only small problem there silicone me who had banished this chemical for 1 year but too bad it makes me a dream mane my hair is shiny ultra soft super soft (like brand yes yes) they feel super good. Short take without hesitation. I've had no problems with the delivery (2 days).