--- product_id: 187429774 title: "- Fine Hair Shampoo - Biotin Thickening Shampoo for Thin Hair (10 Fl Oz)" brand: "ouai" price: "¥10918" 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 weight Biotin boosts strand strength + reduces breakage - Fine Hair Shampoo - Biotin Thickening Shampoo for Thin Hair (10 Fl Oz) **Brand:** ouai **Price:** ¥10918 **Availability:** ✅ In Stock ## Summary > 💥 Turn up the volume, not the weight—fine hair, meet your glow-up! ## Quick Answers - **What is this?** - Fine Hair Shampoo - Biotin Thickening Shampoo for Thin Hair (10 Fl Oz) by ouai - **How much does it cost?** ¥10918 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 - • **Layer Your Luxe Routine:** Pair with OUAI Fine Conditioner and Thickening Spray for next-level volume and lift. - • **Volume That Speaks Volumes:** Experience lasting bounce and body without the heavy feel—fine hair’s new best friend. - • **Power-Packed Biotin Formula:** Strengthen strands and reduce breakage with every wash for visibly thicker hair. - • **Clean Beauty, Zero Compromise:** Sulfate, paraben, phthalate, and gluten-free—safe for color and chemically treated hair. - • **Signature Mercer Street Scent:** Elevate your shower with fresh Italian lemon, iris, and white musk notes—because scent matters. ## Overview OUAI Fine Hair Shampoo is a biotin-enriched, sulfate-free formula designed specifically for fine, thin hair. Infused with hydrolyzed keratin and chia seed oil, it strengthens strands, reduces breakage, and delivers lightweight volume and shine. Safe for color-treated and chemically processed hair, it features a signature Mercer Street scent and pairs perfectly with OUAI’s conditioner and thickening spray for a full volumizing routine. ## 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: LOVE LOVE LOVE - I don't typically write reviews however I'm in love with this shampoo! I have fine colored treated hair so it's hard to find a shampoo that doesn't weigh my hair down. Truest me when I say I've tried most all of them? I read the reviews and decided to try Ouai. I'm so impressed with the product. Not only does it smell amazing and lathers well it makes my hair soft and fuller. My boyfriend is your typical alpha male and I had the travel size in the shower on our last cruise. He literally came out and said that shampoo smells so good and lathers nice. I about fell out. He hardly notices anything! Review: My Hair Feels So Clean and Has More Body - I absolutely love this OUAI Fine Hair Shampoo. It leaves my hair feeling incredibly clean without stripping it, and it gives my fine hair noticeably more body and volume. A little goes a long way, and it lathers really well. My hair feels soft, looks healthier, and has more movement after every wash. It also smells amazing, which is a huge bonus. This has definitely become one of my favorite shampoos, and I’ll continue buying it. ## 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 | #1,359 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #36 in Hair Shampoo | | Brand | OUAI | | Brand Name | OUAI | | Customer Reviews | 4.4 out of 5 stars 4,093 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) - 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 ### ⭐⭐⭐⭐⭐ LOVE LOVE LOVE *by Y***. on August 17, 2026* I don't typically write reviews however I'm in love with this shampoo! I have fine colored treated hair so it's hard to find a shampoo that doesn't weigh my hair down. Truest me when I say I've tried most all of them? I read the reviews and decided to try Ouai. I'm so impressed with the product. Not only does it smell amazing and lathers well it makes my hair soft and fuller. My boyfriend is your typical alpha male and I had the travel size in the shower on our last cruise. He literally came out and said that shampoo smells so good and lathers nice. I about fell out. He hardly notices anything! ### ⭐⭐⭐⭐⭐ My Hair Feels So Clean and Has More Body *by M***A on July 10, 2026* I absolutely love this OUAI Fine Hair Shampoo. It leaves my hair feeling incredibly clean without stripping it, and it gives my fine hair noticeably more body and volume. A little goes a long way, and it lathers really well. My hair feels soft, looks healthier, and has more movement after every wash. It also smells amazing, which is a huge bonus. This has definitely become one of my favorite shampoos, and I’ll continue buying it. ### ⭐⭐⭐⭐⭐ Thickening thin fine hair. *by L***K on July 27, 2026* It does what it says, it thickens the hair, leaves it soft and you do not need a while bunch. ## 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: 2026-08-29*