OUAI Fine Hair Shampoo Refill – Volumizing Shampoo for Fine Strands – Made with Biotin, Keratin & Chia Seed Oil – Strengthens, Nourishes & Thickens – Color-Safe & Sulfate Free Hair Care (32 Fl oz)

Price: S$28.00
(as of Feb 22, 2026 00:27:13 UTC – Details)


This color-safe, hair volumizer shampoo breathes life into fine, flat hair with strengthening keratin, Biotin, and nourishing chia seed oil. Hair is left clean, bouncy, and full of volume, so you can finally be fine with being fine. And did we mention it’s the perfect shampoo for color treated hair? Yes OUAI. Follow with Fine Conditioner for best results.
Is this recyclable? Yes, I am fully recyclable!
How To Use
Thoroughly wet hair from roots to ends. Lather a quarter-size amount in your hands, then work into roots and anywhere hair touches the scalp. Rinse hair shampoo. Make sure to squeeze out excess moisture before pairing with Fine Conditioner.
Key Ingredients: Biotin, chia seed oil, hydrolyzed keratin
As always, all our products are: cruelty-free, gluten-free, paraben-free, phthalate-free, SLS-free & SLES-free
The Scent: Mercer Street
Scents & the city. Mercer Street is an outspoken fragrance that a-OUAI-kens the senses with notes of Italian lemon, Turkish rose, jasmine sambac, iris, lily, and white musk.
Top Notes
Italian lemon, orange, peony, iris, lily
Base Notes
Musk, orris
Middle Notes
Magnolia, jasmine, rose damask
Turn The Volume Up – This lightweight, sulfate free shampoo brings fine strands back to life with major bounce and lasting volume.
Stronger Strands, Less Breakage – Packed with biotin and keratin, this hair thickening shampoo formula helps reinforce each strand from the inside out.
Nourishment You Can Feel – This volume shampoo is made with chia seed oil to deliver deep hydration and shine, leaving hair soft, touchable, and anything but weighed down.
How to Use – Lather a quarter-size amount of the moisturizing shampoo into wet hair, focusing on roots. Rinse well, then follow with Fine Conditioner for volume that doesn’t quit.
OUAI Means Yes – In that casual Parisian way. OUAI is about saying “yes OUAI” to living boldly. We strive to be something you reach for everyday, so wherever you go, you can go all the OUAI.