Ouidad Clear and Gentle Shampoo is formulated for curly hair, either natural or permed. This clear, lightly scented formula gives a creamy, fine lather that leaves hair clean but, not dry. The result is hair that is naturally moist and smooth. The ingredients are a combination of gentle cleansers and lightweight but effective conditioners. Mostly Natural or Naturally derived ingredients are used and look to be hypoallergenic. I can only say that after only ONE USE this shampoo lived up to it's reputation as a 'Curl Enhancing' product. My hair is naturally curly but, I spend a little time (And VERY few hair products) making it straight or just slightly wavy and have been doing this for sometime so, most hair products have little effect in 'Bringing Back' the curl. At least, right away. This shampoo revived my curl - I was literally a 'Mop Top' again. With soft, well defined curls and little frizz. My hair was shiny and silky soft. This product should be a must have for anyone looking for great curls. Definitely, A CURL'S BEST FRIEND!