OUAI Fine Hair Shampoo – Biotin Thickening Shampoo for Thin Hair (10 Fl Oz)

Customers find this shampoo effective for fine hair, noting it cleans well and leaves it feeling smooth. The product receives positive feedback for its thickening properties, making it look and feel thicker, and its ability to add volume without weighing down strands. They appreciate its pleasant fragrance and softness after use. While some customers consider it worth the price, others feel it's not worth the cost.