I have a very full thick head of shoulder length somewhat fine & wavy hair that tend(ed) to frizz in any humidity. Like most women, I also color my hair. I'd tried every product out there to deep condition and anti frizz and nothing worked except those heavy gel type products that made my hair feel kinda crunchy, not soft & silky the way I wanted. So a few years ago I tried Wen. It has literally changed my hair! From the first try, my hair was soft & even in high humidity it did not frizz. Ive used it ever since and only wish I'd found it sooner. That said I don't think this Wen formulation is the right product for thin hair that needs volume. It's much too rich in emollients for that. But if you have hair that's tough to tame, wow, Wen Sweet Almond Mint really works. Yes, it's expensive but this one product replaces all the shampoo conditioner & styling products I used to rely on, and with much better results.