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What’s the difference between Fine, Medium, and Thick Hair Shampoo?Updated 21 days ago

If you’re wondering which OUAI Shampoo is right for you, we’re here to make it easy. Fine, Medium, and Thick refer to the thickness of your individual hair strands, and each formula is designed to care for the concerns that commonly come with your strand type.

Try the strand test: Hold a single strand of hair between your fingers.

  • Can hardly feel it? You likely have fine hair.

  • Feel it a little? You likely have medium hair.

  • Feel a noticeably coarse strand? You likely have thick hair.


Fine Hair Shampoo

Fine Hair Shampoo gives fine strands a lightweight cleanse while adding body, bounce, and the appearance of fuller hair. It’s a great match if you want volume without weighing your hair down. Its formula includes chia seed oil for a fuller look, hemp seed extract for hydration, and keratin to help smooth frizz and flyaways.

Best for: Fine strands, flatness, and frizz. It can make hair look and feel fuller, but it does not grow thicker hair.

Medium Hair Shampoo

Medium Hair Shampoo balances cleansing and nourishment for strands that fall between fine and thick. It helps leave hair feeling soft and strong, with more shine and less frizz. Kumquat fruit extract supports a shiny finish, babassu oil provides lightweight hydration, and keratin helps smooth flyaways.

Best for: Medium strands, frizz, dullness, and hair prone to breakage.

Thick Hair Shampoo

Thick Hair Shampoo cleanses thick strands while giving them the richer moisture they need. It helps hair feel softer, smoother, and easier to manage. Shea butter provides deep hydration, marshmallow root extract helps with detangling, and keratin helps tame frizz and flyaways.

Best for: Thick strands, dryness, frizz, and hair prone to breakage.

Still conflicted? Choose based on how a single strand feels, then consider what your hair needs most: lightweight volume, balanced nourishment, or deep hydration. If you’d like a hand finding your OUAI, you can email our OUAI Experts at [email protected] or click below.


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