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A white OUAI Fine Hair Conditioner refill pouch stands upright on a warm cream studio surface. Text: “OUAI”, “FINE HAIR”, “CHEVEUX FINS”, “CONDITIONER”, “REVITALISANT”, “32 fl oz / 946 ml”.
20% off
OUAI Fine Hair Shampoo 32oz refill pouch angled on white background.
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: woman's hair transformed from tousled to smooth, voluminous blonde waves.
OUAI Fine Hair Shampoo dispensing from bottle into open palm, white background.
OUAI Fine Hair Shampoo held by blonde model in white top, neutral background.
Person washing long hair with shampoo lather in a shower, back view.
A white OUAI Fine Hair Conditioner refill pouch stands upright on a warm cream studio surface. Text: “OUAI”, “FINE HAIR”, “CHEVEUX FINS”, “CONDITIONER”, “REVITALISANT”, “32 fl oz / 946 ml”.
20% off
OUAI Fine Hair Shampoo 32oz refill pouch angled on white background.
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: woman's hair transformed from tousled to smooth, voluminous blonde waves.
OUAI Fine Hair Shampoo dispensing from bottle into open palm, white background.
OUAI Fine Hair Shampoo held by blonde model in white top, neutral background.
Person washing long hair with shampoo lather in a shower, back view.

Fine Hair Shampoo - Refill

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

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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.

Keep it on deck 24/7 with this Refill Pouch, made with 60% less plastic than bottles. Because climate change is real.

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 - Refill

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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: 4.592466 / 5 from 1168 reviews.

AI Generated Review Summary

Fine Hair Shampoo Refill Pouches are praised for their eco-friendly refill design, which uses significantly less plastic. Customers love the shampoo's ability to clean and strengthen fine hair, providing volume and a healthy, shiny look. The pleasant fragrance and clean, fresh scalp sensation are also highlighted.

Summary topics

  • Eco-friendly Refills (3%): It was reported by customers that they love the refills and find them wonderful and worth the money.
  • Hair Softness and Bounce (42%): A substantial number of customers stated that the shampoo feels amazing and leaves their hair soft and bouncy.
  • Scalp Cleanliness (3%): Customers keep praising how this shampoo cleans their scalp, leaving their scalp feeling clean and fresh.
  • Fragrance Satisfaction (39%): Many customers expressed satisfaction with the smell, describing it as good, amazing, wonderful, and long-lasting.
  • Hair Volume (4%): Customers loved the volume this product provides, with many mentioning it as the best they have used.

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

Review highlights

  • "Nice shampoo lathers well had a nice smell and leaves my hair feeling very clean ."Missy S.
  • "My hair is soft, my scalp is not irritated and my hair smells fantastic."JAMIE H.
  • "I love the fine hair shampoo - since I started using it my hair looks and feels fuller, is healthier and smells great!"Tiffany C.

Reviews

Best shampoo

"Best shampoo I have ever tried for my fine and thin hair. However the bottle is horrible. But the shampoo is so good I don't care how bad the bottle is. I just transfer it into a better squeeze bottle."

Dixie (5/5)

Wonderful!

"I really love this product and I’m so grateful it has a refill! I have fine hair and many products weight it down or don’t wash out well but this shampoo is perfect! It leaves my hair feeling healthy, clean and light! I have no issues getting volume in my hair while styling!"

Katherine A. (5/5)

Best shampoo

"Besides smelling absolutely amazing, it preps my hair for any treatment, and my curls feel soft, clean, and super fresh."

Meredes P. (5/5)

Love it! Love it!

"I love this shampoo. I’ve tried many (too many) shampoos for “fine” hair. This is the only one that actually makes my hair feel thicker. I’m a customer for life! Also, I love the scent. The next day after washing I can still smell the Mercer St scent. I wish Mercer St was in more of your products. I hesitate to use, the conditioner, and the styling products because their smell will over write the Mercer St. But the shampoo for fine hair is truly wonderful!"

Born 🥴. (5/5)

Good Shampoo, Great Scent

"Pleeeaaseee bring back Mercer Street perfume. I need to sentmax this fragrance lol! Oh the shampoo? It and the conditioner are good mid range products. They’re not bad but it doesn’t blow my socks off. I find myself reaching for them tho, and I’ve finished their travel sized products (which is my rule if I am to purchase full size). I have fine wavy hair and it cleanses my hair really well and the conditioner doesn’t weigh it down. Are there drugstore shampoos that do the same? Sure. My shower experience is also important to me though, and this scent is heavenly. After 12hrs post shower and even sleeping on it, I can still smell the scent, and in this case, I love that. My hair feels soft and airy, thank you Ouai :)"

Rainie (4/5)

Best I’ve had

"I have fine hair that tangles with all hair products. Ouai is hands down the best at not making my combing experience painful and smells great."

Suzanne S. (5/5)

Love the shampoo & conditioner

"Ouai smells so good and leaves my hair looking great!"

Jennifer F. (5/5)

Great shampoo

"I have tried a lot of shampoo and conditioners for my fine hair and this has been the best product I have found."

Elizabeth S. (5/5)

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)

Q&A

what fragrance is the fine hair shampoo?
Hi Carol! Our Fine Hair Shampoo has the Mercer Street scent which is a sheer and airy floral/musky fragrance with notes of Italian Lemon, Turkish Rose, Jasmine Sambac, Iris, Lilly, and White Musk.
Is it safe to use for color treated hair?
Hi Lani! Hope you're well! All our shampoos and conditioners are sulfate free, so they’re safe to use on color treated hair. The PH of our Shampoos range from 5 to 6 and Conditioners range from 4 to 5. These ranges are at the optimal level for hair and scalp health. Hope this helps!
Is the packaging recyclable?
Hi Kay! You can recycle part of your refill pouch. The caps are recyclable, but the pouch had to be made with a type of light plastic that is still OUAI more sustainable than a liter bottle. This part is not recyclable. The plastic these use are 60% less plastic than rigid plastic bottles and require 50% less energy to produce. These pouches also generate less CO3 emissions during production and shipping. They also weigh less than a typical plastic bottle, which helps reduce the carbon footprint in regards to transport and manufacturing.
Do you get more in the pouch than the bottle?? It’s double the price. Thanks
Hello Nicholas! Yes, definitely! Our bottled Fine Hair Shampoo bottled contains 10 fl oz / 300ml of shampoo while the refill pouch contains 32 fl oz/ 946ml. It's triple the amount so you can save more if you're going to refill your original bottle.