Ouai Shampoo for Fine Hair The new Ouai shampoo and conditioners at Sephora help all types of textures. There's the Ouai Shampoo for Fine Hair ($28-$56) that's rich in chia seed oil to help thicken fine hair and boost volume (with biotin to keep it strong). There's also an accompanying Ouai Conditioner for Fine Hair ($28-$56) to add body during that step as well. Image Source: sephora.com Ouai Shampoo for Fine Hair $28 from sephora.com Buy Now Ouai Conditioner for Fine Hair $28 from sephora.com Buy Now