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

OUAI Fine Hair Shampoo is formulated specifically for individuals struggling with flat, limp, or fine hair that lacks natural volume. Its biotin-enriched formula combines hydrolyzed keratin and chia seed oil to help improve the appearance of hair strength, softness, and fullness. Hydrolyzed keratin helps condition and smooth the hair surface, while chia seed oil provides lightweight nourishment. The shampoo removes excess oil and buildup, leaving strands feeling refreshed and easier to style. Its Mercer Street fragrance features notes of Italian lemon, jasmine, and white musk, adding a luxurious touch to the washing experience.

The 10 fl oz bottle offers a convenient size for regular use. Its color-safe formulation is free from SLS, SLES, parabens, and phthalates, making it suitable for many haircare routines. The shampoo produces a rich lather without relying on traditional sulfate surfactants. However, its fragrance may not suit sensitive scalps, and the cleansing ingredients could feel drying for individuals with very dry hair. Although the formula creates the appearance of thicker, fuller strands, it does not clinically treat hair loss or stimulate new hair growth. Overall, OUAI Fine Hair Shampoo is a strong choice for achieving cleaner, bouncier, more manageable fine hair.

Key Features

• Biotin-Enriched Formula – Helps support the appearance of stronger, fuller, healthier-looking hair.

• Hydrolyzed Keratin – Conditions strands, improves smoothness, and helps reduce the appearance of frizz.

• Nourishing Chia Seed Oil – Provides lightweight conditioning without unnecessarily weighing down fine hair.

• SLS & SLES-Free Cleansing – Removes excess oil and buildup while remaining suitable for color-treated hair.

• 10 Fl Oz Bottle – Features OUAI's signature Mercer Street fragrance for a refreshing hair-washing experience.