I have been using it for 3 weeks and I think it's starting to work.
My hair used to get oily very quickly but it's in better condition now.

For me, this shampoo is just what I need. I have oily, long, and frizzy hair, and unfortunately, I have to wash it daily with other shampoos. With this specific one, I only need to wash it every three days and I don't need to use a lot of quantity. This shampoo doesn't create much foam in general, and that's what I like about it. Its scent is divine and the quantity lasts for more than two months, depending on usage. Personally, it lasts me about three months. I have been using it for years and I pair it with its conditioner or with the salonplex shampoo with Sakura, which gives the same result on my hair. Personally, it has saved me from misery, hassle, and money.

I didn't like it at all.
This shampoo is not for oily hair. I wash my hair three times and still have a feeling of greasiness. After drying it, the roots continue to be oily. The hair doesn't clean at all. As for the tea tree that is supposed to be good for dry scalp, dandruff, etc., not even close. My dry skin flared up again, which is logical since it never cleans the scalp.