Give it time
I first bought the trial/travel size and honestly didn’t love the products. But they came so highly recommended I decided to go ahead and purchase the full size to give them a proper long term trial. I am so glad that I did. I have a dry itchy scalp and fine, thin, frizzy wavy hair that I normally wash every 3 days. The first couple of weeks my hair was excessively oily and heavy the day after the wash. It took time for my scalp adjust and for me to find the right amount of concentrate for my hair. Double wash is key and the conditioner I can only apply to my ends otherwise it is too heavy. But the shampoo on its own conditions quite well for someone with fine hair. My scalp is less itchy, dandruff is almost completely gone, frizz is more controllable, and my hair is looking more vibrant after 2 months of use.