I have fine blonde curls and they are very particular about what they like. For the last few years I've only been buying hair care products from
Lush. I prefer the Karma Komba shampoo bar followed by either their Veganese or Coolaulin conditioner. The bars last a really long time for their size, two months plus on my hair - which is a few inches past my shoulders.
You can hit up the English website for more info on their products. The store staff is always very helpful, they make lots of good recommendations once you tell them what you're after. If one of their shops isn't close to you while you are there they can ship to you via their
Japanese website.