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A translucent OUAI Fine Hair Shampoo bottle containing pale yellow liquid stands upright on a warm cream surface. Text: “OUAI”, “FINE HAIR”, “CHEVEUX FINS”, “SHAMPOO”, “SHAMPOOING”, “10 fl oz / 300 ml”.
OUAI shampoo bottle with ingredient information on a white background
Ouai fine hair shampoo bottle styled with a pink rose, lemon slices, and jasmine flowers on a white background, with text reading 'MERCER STREET FRAGRANCE Notes of: ITALIAN LEMON, TURKISH ROSE, IRIS & WHITE MUSK'.
Before and after comparison of a woman with long blonde hair, wearing a white top.
A translucent OUAI Fine Hair Shampoo bottle containing pale yellow liquid stands upright on a warm cream surface. Text: “OUAI”, “FINE HAIR”, “CHEVEUX FINS”, “SHAMPOO”, “SHAMPOOING”, “10 fl oz / 300 ml”.
OUAI shampoo bottle with ingredient information on a white background
Ouai fine hair shampoo bottle styled with a pink rose, lemon slices, and jasmine flowers on a white background, with text reading 'MERCER STREET FRAGRANCE Notes of: ITALIAN LEMON, TURKISH ROSE, IRIS & WHITE MUSK'.
Before and after comparison of a woman with long blonde hair, wearing a white top.

Fine Hair Shampoo

For fine hair, this color-safe, thickening shampoo adds volume & bounce and smells as good as it looks.

Size:
FULL SIZE (10 OZ) TRAVEL (3 OZ) JUMBO (16 OZ) REFILL (32 OZ)
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This color-safe 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. 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 shampoo. Make sure to squeeze out excess moisture before pairing with Fine Conditioner.

ingredients

Water / Aqua / Eau, Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Sodium Methyl Cocoyl Taurate, Peg-200 Hydrogenated Glyceryl Palmate, Cocamide Mipa, Fragrance / Parfum, , Panthenol, Cocoglucosides Hydroxypropyltrimonium Chloride, Hydrolyzed Keratin, Biotin, Salvia Hispanica Seed Oil, Cetrimonium Chloride (Anti-Static Agent/Agent Antistatique), Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Glycerin, Sodium Lauroyl Glycinate, Peg-150 Distearate, Propoxytetramethyl Piperidinyl Dimethicone, Trideceth-6, C11-15 Pareth-7, Peg-7 Glyceryl Cocoate, Sodium Chloride, Polyquaternium-7, Disodium Edta, Citric Acid, Sodium Hydroxide, Tetrasodium Edta, Potassium Sorbate, Sodium Benzoate, Phenoxyethanol, Benzyl Alcohol, Acetic Acid, Sodium Acetate, Benzyl Salicylate, Limonene, Hexyl Cinnamal

As always, all of our products are:
Paraben-Free, Cruelty-Free, Gluten-Free, Phthalate-Free, SLS and SLES-Free

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Fine Hair Shampoo

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THE SCENT:
MERCER STREET

TOP NOTES

Italian lemon, orange, peony, iris, lily

MIDDLE NOTES

Magnolia, jasmine, rose damask

BASE NOTES

Musk, orris

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Overall rating: 4.5914636 / 5 from 1148 reviews.

AI Generated Review Summary

Fine Hair Shampoo is praised for its ability to enhance hair fullness, strength, and shine. Customers appreciate its wonderful fragrance, effective scalp cleaning, and the healthy, shiny look it imparts. The shampoo's great volume and manageability, along with its amazing lather, contribute to a satisfying hair care experience.

Summary topics

  • Fragrance: 4%
  • Hair Feel: 42%
  • Scalp Cleanliness: 3%
  • Hair Appearance: 4%
  • Hair Volume: 4%

Review topics: ["size","volume","fragrance","problem","results","improvement","weight","fit","quality","feels","ingredients","smells","texture","husband","value","service","packaging","look","amount","price","bottle","hair","scalp","works","body","formula","balance","shipping","compliments","residue"].

Review highlights

  • "Nice shampoo lathers well had a nice smell and leaves my hair feeling very clean ." — Missy S.
  • "MY scalp feels great and my hair feels clean!" — Sarah H.
  • "My hair is soft, my scalp is not irritated and my hair smells fantastic." — JAMIE H.

Reviews

Wish I had started this earlier

"As a woman in the middle of perimenopause my hair has changed. I have long, straight hair and hormone changes have left me with some hair loss and dryness. This stuff has transformed my hair within a few weeks. I have never had a shampoo and conditioner combo that I love, I find myself always looking for what is popular or what my salon uses. This will be my go to from now on!"

— Kimberly S. (5/5)

"As someone with a lot of thin, straight hair, I’ve gotta say the Ouai fine hair shampoo has been the best shampoo to grace my scalp! I use this one most days, and every few days will switch it up and use the Ouai detox shampoo. Was excited to see they came out with a jumbo pump!"

— Allison (5/5)

Leaves my hair brittle

"I really loved the smell and I wanted to like this shampoo but unfortunately, even combined with conditioner (and sometimes hair mask), this shampoo leaves my hair brittle compared to other products I have used"

— Christina L. (3/5)

Lasts 2-3 days to keep roots lively

"I use this with the condition. I do find it slightly drying but this leads to more lift and bounce Love the scent and lather. I’m slightly sensitive to the formula which can make my scalp react but worth it for the lift."

— Beth P. (4/5)

Best shampoo I’ve tried for thin, fine hair

"This is hands-down the best shampoo and conditioner I’ve tried for thin, fine hair. if you’ve tried so many different shampoos like me and never found one that washes your hair effectively without stripping it completely and making it get greasy again quickly, but also giving it volume and making it feel soft, try this shampoo and conditioner, you won’t regret it! I have also tried the hair mask, body scrub, and leave in conditioner and love those as well!"

— Jenna B. (5/5)

Love the smell. Love the

"Love the smell. Love the quality. Love everything about it!!"

— Sheila C. (5/5)

Fine Hair Shampoo review

"Great product! I will keep using it for a long time. I've also used the Ouai Hair Thickening spray and like it but this is easier."

— Jennifer F. (5/5)

"The shampoo is a delight to use. Fragrance and hair care is wonderful"

— Joni (5/5)

It was hard on my hair and the scent is very strong

"The product was hard on my hair and the scent is very strong"

— Natalie J. (1/5)

Great shampoo!

"Love this shampoo, leaves your hair clean & fresh, without weighing it down as some products do."

— Leslie B. (5/5)

Q&A

How to open bottle that does not have pump fine hair shampoo.
Hi Linda, Our standard-size Fine Hair Shampoo does not come with a pump. To open, look for the small indentation on the cap and press down on that area — the lid will pop open for easy use. ✨ I hope this helps! Please let us know if you have any further questions :).
If it sulfate free why is sulfate listed as an ingrident and sodium? Is it actually color safe?
Hi Maya, That's a great question-- All OUAI products are produced without the use of parabens, phthalates, and sulfates. The ingredient you are referring to Sodium C14-15 Olefin Sulfonate, is not a sulfate. Sodium C14-16 Olefin Sulfonate" (also known as Sodium C14-16 Alpha Olefin Sulfonate or AOS) is not the same as a sulfate; it's an olefin sulfonate, a different class of anionic surfactant with similar cleansing properties but a slightly different chemical structure. All of our products are SLS and SLES free. Which means OUAI uses alternative ingredients to help cleanse and nourish. Hope this helps!
Hello Ouai I LOVE YOUR PRODUCTS! especially the smell! But which of your four scents is the fine hair shampoo and conditioner?
Hi Kamille, Our Fine Hair Shampoo has the Mercer Street scent. It is is an outspoken fragrance that a-OUAI-kens the senses with notes of Italian lemon, Turkish rose, jasmine sambac, iris, lily, and white musk.
Is this product vegan?
Hi Maddie! Our Shampoos and Conditioners (including Fine Hair Shampoo) contain hydrolyzed keratin which comes from sheep's wool--no worries, no sheep was harmed during the process (they are basically being groomed)! OUAI Haircare products are produced without the use of parabens, phthalates and sulfates.
How often can I use a fine shampoo?
You can use our FINE HAIR Shampoo as often as often as you'd like! Some customers prefer it as their daily/regular shampoo. However, our Daily Care Shampoo's are tailored to be used as often as your hair needs!