---
product_id: 127471404
title: "NIKWAX COTTON PROOF Wash-in Waterproofing for Cotton Fabric, Polycotton & Canvas Clothing, Tents and Equipment. Adds Water Repellency & Revives Breathability"
brand: "nikwax"
price: "¥5005"
currency: JPY
in_stock: true
reviews_count: 13
url: https://www.desertcart.jp/products/127471404-nikwax-cotton-proof-wash-in-waterproofing-for-cotton-fabric-polycotton
store_origin: JP
region: Japan
---

# 300ml high-performance waterproofer Eco-friendly, PFAS-free & recyclable Machine & hand wash compatible NIKWAX COTTON PROOF Wash-in Waterproofing for Cotton Fabric, Polycotton & Canvas Clothing, Tents and Equipment. Adds Water Repellency & Revives Breathability

**Brand:** nikwax
**Price:** ¥5005
**Availability:** ✅ In Stock

## Summary

> 💧 Waterproof your adventure, sustainably and effortlessly!

## Quick Answers

- **What is this?** NIKWAX COTTON PROOF Wash-in Waterproofing for Cotton Fabric, Polycotton & Canvas Clothing, Tents and Equipment. Adds Water Repellency & Revives Breathability by nikwax
- **How much does it cost?** ¥5005 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/127471404-nikwax-cotton-proof-wash-in-waterproofing-for-cotton-fabric-polycotton)

## Best For

- nikwax enthusiasts

## Why This Product

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

## Key Features

- • **Stay Dry, Stay Ahead:** Long-lasting water repellency keeps you comfortable rain or shine.
- • **Versatile Protection:** Perfect for cotton, polycotton, denim, canvas, tents, and backpacks.
- • **Breathe Easy Outdoors:** Revives breathability while blocking water absorption.
- • **Effortless Waterproofing:** Simple machine or hand wash application for hassle-free gear care.
- • **Eco-Conscious Performance:** Water-based, PFAS-free formula in recycled, recyclable packaging.

## Overview

NIKWAX COTTON PROOF is a 300ml water-based waterproofing treatment designed to enhance water repellency and maintain breathability on cotton, polycotton, denim, and canvas fabrics. Suitable for clothing, tents, and gear, it offers long-lasting protection through easy machine or hand wash application. Eco-friendly and PFAS-free, it supports sustainable outdoor living with recyclable packaging.

## Features

- NIKWAX COTTON PROOF 300ml - High performance waterproofer designed to enhance water repellency and apply a durable water-repellent finish to cotton, polycotton, and canvas fabrics, reducing water absorption and maintaining breathability.
- LONG-LASTING PROTECTION - This product adds long-lasting water repellency ensuring you stay dry and comfortable during your outdoor adventures. Always clean with Nikwax Tech Wash for clothing and Nikwax Tent & Gear Solarwash for tents & gear.
- EASY TO USE – MACHINE & HAND WASH – Convenient for all types of outdoor gear, this waterproofing solution can be used in the washing machine or by hand, offering hassle-free care for your outdoor clothing and gear.
- IDEAL FOR ALL COTTON OUTDOOR CLOTHING & GEAR – Versatile waterproofing treatment recommended for cotton, polycotton, denim and canvas clothing, jackets, trousers, backpacks, tents & awnings.
- ECO-FRIENDLY & SUSTAINABLE – All Nikwax products are environmentally friendly, PFAS-free, water based and non-persistent in the environment. Nikwax bottles are made from recycled material and are recyclable, making Nikwax a great choice for eco-conscious customers.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B01MQQHJL3 |
| Date First Available | 16 Oct. 2018 |

## Product Details

- **Brand:** Nikwax
- **Item Form:** Liquid
- **Material Feature:** Cotton
- **Scent:** Unscented
- **Specific Uses For Product:** Waterproofing Cotton

## Images

![NIKWAX COTTON PROOF Wash-in Waterproofing for Cotton Fabric, Polycotton & Canvas Clothing, Tents and Equipment. Adds Water Repellency & Revives Breathability - Image 1](https://m.media-amazon.com/images/I/71VpMxJ1PZL.jpg)

## Available Options

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

## Questions & Answers

**Q: What can I use Cotton Proof on?**
A: Cotton Proof is great for waterproofing cotton and polycotton clothing such as trousers and jackets. It can also be applied by hand to canvas rucksacks, tents and awnings.

**Q: Will it really make Cotton waterproof?**
A: Cotton Proof keeps you dry by adding water repellency and maintaining breathability of all cotton, polycotton and canvas equipment and clothing.

**Q: Do Nikwax treatments change the look and feel of garments?**
A: No. Nikwax treatments do not change the colour, texture or feel or garments.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good value
*by  on Reviewed in the United Kingdom 10 August 2026*

Great product, works as described. Will buy again.

### ⭐⭐⭐⭐⭐ I recommend
*by  on Reviewed in the United Kingdom 23 July 2026*

Okay, first thing is, make sure you shake the bottle/container before you use. I didn't do that and it came out a bit lumpy. I used it to waterproof two cotton bucket hats in the synthetics cycle of my washing machine. I used about 200ml for that (twice what was recommended, as I was a bit sceptical). One of the hats was quite a heavy cotton (a Barbour hat) and the other was a light/thin Berghaus walkers' type hat. Anyway on removing from the washing machine there was quite a bit of the white residue left on the heavier cotton had. Could be due to the fact that I didn't shake the bottle and used double the amount. Anyway, I rinsed/washed out the residue by hand, just using cold water from the tap. After I let the hats dry, I tested them both by pouring water from the tap onto the top of each hat. Not a bit of water came through. I then attempted to us both bucket hats as buckets. Filled both to the brim with water from the tap. Result: not a bit of water leaked, so I now have two waterproof bucket hats, and two make-shift buckets, if needed 😊Pretty impressive!

### ⭐⭐⭐⭐ Product
*by  on Reviewed in the United Kingdom 18 May 2026*

Used it before and Seems to do what it says no

## Frequently Bought Together

- Nikwax Cotton Proof, 1000ml, Waterproofing for Cotton, Polycotton, and Canvas, Adds Water Repellency
- Nikwax Tech Wash , Green ,10 fl. oz.
- Nikwax TX.Direct Wash-In Waterproofing

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**Shop now:** [https://www.desertcart.jp/products/127471404-nikwax-cotton-proof-wash-in-waterproofing-for-cotton-fabric-polycotton](https://www.desertcart.jp/products/127471404-nikwax-cotton-proof-wash-in-waterproofing-for-cotton-fabric-polycotton)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-22*