---
product_id: 190295540
title: "OUAI Thick Shampoo Refill - Moisturizing Shampoo with Keratin, Marshmallow Root, Shea Butter & Avocado Oil for Thick Hair - Strengthens & Hydrates - Paraben, Phthalate & Sulfate Free (32 Fl Oz)"
brand: "ouai"
price: "€ 131.84"
currency: EUR
in_stock: true
reviews_count: 8
category: "Ouai"
url: https://www.desertcart.sk/products/190295540-ouai-thick-shampoo-refill-moisturizing-shampoo-with-keratin-marshmallow-root
store_origin: SK
region: Slovakia
---

# Keratin + Marshmallow Root blend 32 fl oz ultra-moisturizing volume Eco-friendly refill, less plastic waste OUAI Thick Shampoo Refill - Moisturizing Shampoo with Keratin, Marshmallow Root, Shea Butter & Avocado Oil for Thick Hair - Strengthens & Hydrates - Paraben, Phthalate & Sulfate Free (32 Fl Oz)

**Brand:** ouai
**Price:** € 131.84
**Availability:** ✅ In Stock

## Summary

> ♻️ Elevate your hair game sustainably with OUAI’s luxe refill!

## Quick Answers

- **What is this?** OUAI Thick Shampoo Refill - Moisturizing Shampoo with Keratin, Marshmallow Root, Shea Butter & Avocado Oil for Thick Hair - Strengthens & Hydrates - Paraben, Phthalate & Sulfate Free (32 Fl Oz) by ouai
- **How much does it cost?** € 131.84 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/190295540-ouai-thick-shampoo-refill-moisturizing-shampoo-with-keratin-marshmallow-root)

## 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

- • **Eco-Chic Refill:** Large 32 oz refill reduces plastic waste while saving you money
- • **Effortless Luxe Routine:** Light Mercer Street scent elevates your wash day to a self-care ritual
- • **Salon-Quality Care at Home:** Keratin-infused formula smooths and protects thick, textured hair effortlessly
- • **Clean Beauty, Zero Compromise:** Paraben, phthalate & sulfate free for gentle yet effective cleansing
- • **Hydrate & Strengthen Every Strand:** Deep moisturizing with Shea Butter & Avocado Oil for resilient, frizz-free hair

## Overview

OUAI Thick Shampoo Refill is a 32 fl oz moisturizing shampoo designed for thick, textured hair. Enriched with keratin, marshmallow root, shea butter, and avocado oil, it strengthens and hydrates hair while taming frizz. This sulfate, paraben, and phthalate-free formula offers salon-quality care in an eco-friendly refill format, delivering a rich, nourishing cleanse with a subtle Mercer Street scent.

## Description

desertcart.com : OUAI Thick Shampoo Refill - Moisturizing Shampoo with Keratin, Marshmallow Root, Shea Butter & Avocado Oil for Thick Hair - Strengthens & Hydrates - Paraben, Phthalate & Sulfate Free (32 Fl Oz) : Beauty & Personal Care

Review: Great for Color- and Keratin-Treated Hair — And Much More Cost-Effective in the Refill Size - I bought the OUAI Medium Shampoo Refill because I needed something gentle enough for color-treated and keratin-treated hair, and it has worked really well for me. It cleans thoroughly without stripping, and leaves my hair feeling soft, smooth, and healthy. The formula has just the right balance—rich enough to nourish my hair, but not heavy or greasy. The scent is light, clean, and really pleasant, and it pairs perfectly with the matching conditioner. One of my favorite things about this refill is how cost-effective it is. You get a much larger amount for the price, and it’s more eco-friendly since it uses far less plastic than buying multiple bottles. If there’s a minor downside, it’s that using too much can feel a little rich, so a smaller amount works best—especially if you have finer hair. But overall, this shampoo has been a great option for maintaining both my color and keratin treatment. Overall: High-quality shampoo, gentle on treated hair, great scent, and a smart buy in the larger refill size. I’ll definitely keep repurchasing.
Review: A staple in my shower - I’ve been using OUAI Medium Shampoo, and it’s officially a staple in my shower. This shampoo is the perfect balance—it cleans deeply without stripping, and leaves my hair feeling soft, light, and fresh instead of dry or heavy. The scent is clean, luxe, and salon-level good without being overpowering. It makes washing my hair feel like a mini self-care moment rather than a chore. A little goes a long way so start small and work your way up as needed. Final verdict: If you want healthy-looking, bouncy, clean hair that still feels moisturized and touchable, this shampoo delivers. Worth every drop.

## Features

- Rich, Moisturizing Shampoo - Been dreading this all week? This hair strengthening shampoo calms dry, thick hair while fighting frizz and smoothing every strand so you can look forward to wash day.
- Moisture So Rich You'll Need a Prenup - This keratin shampoo fights frizz and tames flyaways with the help of marshmallow root to detangle and prevent hair from coiling. Shea butter delivers deep hydration while avocado oil coats your hair to prevent breakage.
- OUAI Means Yes - In that casual Parisian way. OUAI is about being better IRL. It's about having honest conversations with our community. It's about letting go of unrealistic expectations and embracing your imperfections.
- Made For Effortless Routines - All OUAI hair care products including our thick hair shampoo and conditioner are carefully crafted to cut styling time and nourish your hair health. We put the good stuff in our anti-frizz hair products and leave the bad stuff out, without ever sacrificing quality.
- Live Life Your OUAI - OUAI offers luxury hair products like this sulfate-free shampoo at affordable prices that are user-friendly — no glam squad needed. Wet hair, lather up and rinse clean. Follow up with OUAI Thick Conditioner. Moisture all the OUAI up.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B084BW3C8T |
| Active Ingredients | Marshmallow Root, Shea Butter, Avocado Oil, Hydrolyzed Keratin |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #1,295 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #32 in Hair Shampoo |
| Brand | OUAI |
| Brand Name | OUAI |
| Customer Reviews | 4.5 out of 5 stars 5,433 Reviews |
| Hair Type | Curly, Straight, Thick, Wavy, textured-hair |
| Item Dimensions | 6.63 x 3 x 9.88 inches |
| Item Form | Liquid |
| Item Height | 9.88 inches |
| Item Weight | 2.1 Pounds |
| Liquid Volume | 32 Fluid Ounces |
| Manufacturer | OUAI |
| Material Type Free | Paraben Free, Phthalate Free, SLS Free, SLES Free |
| Number of Items | 1 |
| Other Special Features of the Product | Moisturizing |
| Product Benefits | Anti-Frizz |
| Recommended Uses For Product | Moisturizing,Frizz |
| Scent | Mercer Street |
| Scent Name | Mercer Street |
| Suitable Hair Color | All Hair Colors |
| UPC | 815402021320 |
| Unit Count | 32.00 Fluid Ounces |

## Product Details

- **Brand:** OUAI
- **Item Form:** Liquid
- **Hair Type:** Curly, Straight, Thick, Wavy, textured-hair
- **Scent:** Mercer Street
- **Age Range (Description):** Adult

## Images

![OUAI Thick Shampoo Refill - Moisturizing Shampoo with Keratin, Marshmallow Root, Shea Butter & Avocado Oil for Thick Hair - Strengthens & Hydrates - Paraben, Phthalate & Sulfate Free (32 Fl Oz) - Image 1](https://m.media-amazon.com/images/I/51JXVMBYvGL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for Color- and Keratin-Treated Hair — And Much More Cost-Effective in the Refill Size
*by L***N on November 16, 2025*

I bought the OUAI Medium Shampoo Refill because I needed something gentle enough for color-treated and keratin-treated hair, and it has worked really well for me. It cleans thoroughly without stripping, and leaves my hair feeling soft, smooth, and healthy. The formula has just the right balance—rich enough to nourish my hair, but not heavy or greasy. The scent is light, clean, and really pleasant, and it pairs perfectly with the matching conditioner. One of my favorite things about this refill is how cost-effective it is. You get a much larger amount for the price, and it’s more eco-friendly since it uses far less plastic than buying multiple bottles. If there’s a minor downside, it’s that using too much can feel a little rich, so a smaller amount works best—especially if you have finer hair. But overall, this shampoo has been a great option for maintaining both my color and keratin treatment. Overall: High-quality shampoo, gentle on treated hair, great scent, and a smart buy in the larger refill size. I’ll definitely keep repurchasing.

### ⭐⭐⭐⭐⭐ A staple in my shower
*by A***. on November 28, 2025*

I’ve been using OUAI Medium Shampoo, and it’s officially a staple in my shower. This shampoo is the perfect balance—it cleans deeply without stripping, and leaves my hair feeling soft, light, and fresh instead of dry or heavy. The scent is clean, luxe, and salon-level good without being overpowering. It makes washing my hair feel like a mini self-care moment rather than a chore. A little goes a long way so start small and work your way up as needed. Final verdict: If you want healthy-looking, bouncy, clean hair that still feels moisturized and touchable, this shampoo delivers. Worth every drop.

### ⭐⭐⭐⭐⭐ On must have list
*by A***R on January 9, 2026*

Great shampoo. Love the added biotin and collagen. Makes my hair look so shiney and silky. Also my hair smells beautiful.

## Frequently Bought Together

- OUAI Thick Shampoo Refill - Moisturizing Shampoo with Keratin, Marshmallow Root, Shea Butter & Avocado Oil for Thick Hair - Strengthens & Hydrates - Paraben, Phthalate, Sulfate Free Shampoo (32 Fl Oz)
- OUAI Medium Conditioner Refill - Hydrating Hair Conditioner with Coconut Oil, Babassu Oil, and Keratin - Strengthens, Repairs and Adds Shine - Paraben and Phthalate Free Hair Care Products (32 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)

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**Shop now:** [https://www.desertcart.sk/products/190295540-ouai-thick-shampoo-refill-moisturizing-shampoo-with-keratin-marshmallow-root](https://www.desertcart.sk/products/190295540-ouai-thick-shampoo-refill-moisturizing-shampoo-with-keratin-marshmallow-root)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-03*