---
product_id: 187429774
title: "Fine Hair Shampoo - Biotin Thickening Shampoo for Thin Hair (10 Fl Oz) | Volumizing & Strengthening Keratin & Chia Seed Oil for Women & Men - Lightweight, Color-Safe, Sulfate Free"
brand: "ouai"
price: "¥11525"
currency: JPY
in_stock: true
reviews_count: 13
category: "Ouai"
url: https://www.desertcart.jp/products/187429774-fine-hair-shampoo-biotin-thickening-shampoo-for-thin-hair-10
store_origin: JP
region: Japan
---

# Hydrolyzed keratin smooths & adds shine Chia seed oil volumizes without weighing down Biotin boosts strand strength by reducing breakage Fine Hair Shampoo - Biotin Thickening Shampoo for Thin Hair (10 Fl Oz) | Volumizing & Strengthening Keratin & Chia Seed Oil for Women & Men - Lightweight, Color-Safe, Sulfate Free

**Brand:** ouai
**Price:** ¥11525
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your fine hair game—volume and strength that won’t quit!

## Quick Answers

- **What is this?** Fine Hair Shampoo - Biotin Thickening Shampoo for Thin Hair (10 Fl Oz) | Volumizing & Strengthening Keratin & Chia Seed Oil for Women & Men - Lightweight, Color-Safe, Sulfate Free by ouai
- **How much does it cost?** ¥11525 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/187429774-fine-hair-shampoo-biotin-thickening-shampoo-for-thin-hair-10)

## Best For

- ouai enthusiasts

## Why This Product

- Trusted ouai brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Complete Volume Ritual:** Pair with OUAI Fine Conditioner and Thickening Spray for a full routine that locks in lift and leaves hair irresistibly touchable.
- • **Bounce That Lasts All Day:** Experience major volume and lift with a gentle, non-stripping cleanse designed specifically for fine hair.
- • **Clean Beauty You Can Trust:** Free from sulfates, parabens, phthalates, and gluten—safe for color-treated and chemically processed hair.
- • **Stronger Hair, Less Breakage:** Infused with biotin and keratin to fortify strands and reduce damage, so your hair stays resilient and healthy.
- • **Lightweight, Weightless Formula:** Chia seed oil thickens and volumizes without heaviness, perfect for maintaining natural bounce and body.

## Overview

OUAI Fine Hair Shampoo is a biotin-enriched, sulfate-free formula designed to volumize and strengthen fine, thin hair. Featuring hydrolyzed keratin and chia seed oil, it delivers lasting bounce and shine without weighing hair down. Safe for color-treated and chemically processed hair, this clean beauty essential is your go-to for fuller, healthier-looking hair with a fresh Mercer Street scent.

## Description

desertcart.com : OUAI Fine Hair Shampoo - Biotin Thickening Shampoo for Thin Hair (10 Fl Oz) | Volumizing & Strengthening Keratin & Chia Seed Oil for Women & Men - Lightweight, Color-Safe, Sulfate Free : Beauty & Personal Care

Review: Fuller bouncy hair! - I decided to give this a try after a friend recommended it to me. It smells so good and has a fresh scent. I have very fine hair and immediately noticed after using it more fullness and volume without any greasiness. My hair seemed more bouncy and shiny too,, Great deal on it on desertcart prime day and I wish I had bought more!
Review: Soft hair with a lot of body - This shampoo is terrific. Perfect for fine hair. My hair feels soft, full of body and is easy to style. I can't use conditioners because they flatten my hair, but this product feels like i used my dream conditioner. Easy to comb through with no tangles. Shiny and bouncy. With most shampoos I have to wash my hair every day because it flattens out when I sleep, but I can go up to 3 days between shampoos and it always looks nice. This is a Wirecutter recommendation and they were so right.

## Features

- Turn The Volume All The OUAI Up: Is volume just a button on your phone? This thickening shampoo delivers major bounce and lasting volume with a gentle clean that doesn't strip. So you can finally be fine with being fine.
- Stronger Strands, Less Breakage: Biotin reduces breakage, hydrolyzed keratin smooths and adds shine, and chia seed oil thickens and volumizes without weighing hair down. Apply to roots and work through to ends.
- A Clean Formula You Can Feel Good About: Free of sulfates, parabens, phthalates, and gluten. Safe for color-treated, keratin-treated, and chemically-processed hair. No harsh trade-offs for fine hair.
- Pair It For Best Results: Follow with OUAI Fine Conditioner to lock in volume without weight. Layer in OUAI Thickening Spray for extra lift. The full routine will have you feeling fine.
- OUAI Hair, Body & Fragrance: This thickening, volumizing shampoo is made to transport you wherever you go, with a Mercer Street scent featuring notes of Italian lemon, iris, and white musk.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B084BW599K |
| Active Ingredients | Biotin, Chia Seed Oil, Hydrolyzed Keratin |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #1,455 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #37 in Hair Shampoo |
| Brand | OUAI |
| Brand Name | OUAI |
| Customer Reviews | 4.5 out of 5 stars 4,020 Reviews |
| Hair Type | Fine |
| Item Dimensions | 2.5 x 2.5 x 5.5 inches |
| Item Form | Liquid |
| Item Weight | 12.64 ounces |
| Liquid Volume | 10 fluid ounces |
| Manufacturer | Ouai |
| Manufacturer Part Number | 2532 |
| Material Type Free | Gluten Free, Paraben Free, Phthalate Free, SLS Free, Sodium Laureth Sulfate Free |
| Model Number | 2532 |
| Number of Items | 1 |
| Other Special Features of the Product | Not Tested On Animals |
| Product Benefits | Volumizing |
| Recommended Uses For Product | Split Hair |
| Scent | Mercer Street |
| Scent Name | Mercer Street |
| Suitable Hair Color | All Hair Colors |
| UPC | 815402021269 |
| Unit Count | 10 Fluid Ounces |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** OUAI
- **Hair Type:** Fine
- **Item Form:** Liquid
- **Scent:** Mercer Street

## Images

![Fine Hair Shampoo - Biotin Thickening Shampoo for Thin Hair (10 Fl Oz) | Volumizing & Strengthening Keratin & Chia Seed Oil for Women & Men - Lightweight, Color-Safe, Sulfate Free - Image 1](https://m.media-amazon.com/images/I/511SN3d82fL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Is the fine hair shampoo vegan?**
A: No it will not fade your color.

**Q: What does it smell like?**
A: One of the best smelling shampoos I’ve ever used! Light but still clean and a little floral? The perfect amount of scent.

**Q: Does the thick shampoo add volume?**
A: This is for people with Thick hair! It does Not help to achieve thick hair. It helps to calm the frizz, moisturizes and makes it shiny and sleek and a lovely rose scent.  Do not buy if you want to thickening your hair! This is not for fine/thin or thinning hair. It makes most people with fine/thin or thinning hair overwhelmed by the scent and the amount of conditioning. Usually leaving the hair feeling oily, weighed down and leaving them overwhelmed by the strong scent. I have not tried the fine hair shampoo but I can not recommend using this if your hair isn’t Thick! It works magic on my horse main (I’m Italian) and I have high end, low end and in between and this has given me the best results.

**Q: Can this be used on super fine hair?**
A: Yes, my hair is super fine and curly and I love the shampoo. Just don't like the container opening. Difficult to open due to my arthritis

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fuller bouncy hair!
*by J***N on July 7, 2026*

I decided to give this a try after a friend recommended it to me. It smells so good and has a fresh scent. I have very fine hair and immediately noticed after using it more fullness and volume without any greasiness. My hair seemed more bouncy and shiny too,, Great deal on it on Amazon prime day and I wish I had bought more!

### ⭐⭐⭐⭐⭐ Soft hair with a lot of body
*by F***D on June 13, 2026*

This shampoo is terrific. Perfect for fine hair. My hair feels soft, full of body and is easy to style. I can't use conditioners because they flatten my hair, but this product feels like i used my dream conditioner. Easy to comb through with no tangles. Shiny and bouncy. With most shampoos I have to wash my hair every day because it flattens out when I sleep, but I can go up to 3 days between shampoos and it always looks nice. This is a Wirecutter recommendation and they were so right.

### ⭐⭐⭐⭐⭐ Pricey, but a little goes a long way!
*by D***L on June 30, 2026*

I read about this shampoo in NYT Wirecutter. But it is pricey! For Prime Day, it was on sale, so I thought I would try it. Pros: - the scent is lovely! I can still smell it hours later. This might bug some people. - it lathers up better than any other shampoo I have. - a little goes a long way! - my fine hair (of which I have a lot, even though it's chin-length) has more volume than I've noticed with any other product - the lid for the bottle is the kind where you push down on one side and the other pops up. I am only mentioning this, because the bottle itself has a seal on it. Which means it did not leak at all in transit! - I also have oily skin, and my hair looks glossy and shiny but not at all oily - My hair feels so soft! Cons: - Price. But I might continue to buy and use, because it's better than anything else I've tried!

## Frequently Bought Together

- OUAI Fine Shampoo - Volumizing Shampoo with Strengthening Keratin, Biotin & Chia Seed Oil for Fine Hair - Delivers Clean, Weightless Body - Paraben, Phthalate & Sulfate Free Hair Care (10 Fl Oz)
- OUAI Fine Hair Conditioner - Volumizing Conditioner for Fine Hair Made with Keratin, Biotin and Chia Seed Oil - Adds Softness, Bounce and Volume - Free from Parabens, Sulfates, and Phthalates (10 Oz)
- OUAI Detox Shampoo - Clarifying Shampoo for Build Up, Dirt, Oil, Product and Hard Water - Apple Cider Vinegar & Keratin for Clean, Refreshed Hair - Sulfate-Free Hair Care (10 oz)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/187429774-fine-hair-shampoo-biotin-thickening-shampoo-for-thin-hair-10](https://www.desertcart.jp/products/187429774-fine-hair-shampoo-biotin-thickening-shampoo-for-thin-hair-10)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-10*