---
product_id: 493793921
title: "Heavy Duty Sink and Drain Unblocker 2 x 750ml - Powerful formula for indoor and outdoor use"
brand: "one chem"
price: "¥13923"
currency: JPY
in_stock: true
reviews_count: 8
category: "One Chem"
url: https://www.desertcart.jp/products/493793921-heavy-duty-sink-and-drain-unblocker-2-x-750ml-powerful
store_origin: JP
region: Japan
---

# Instant unblock power Indoor & outdoor use No tools required Heavy Duty Sink and Drain Unblocker 2 x 750ml - Powerful formula for indoor and outdoor use

**Brand:** one chem
**Price:** ¥13923
**Availability:** ✅ In Stock

## Summary

> 🚿 Unclog like a pro—fast, fuss-free, and unstoppable!

## Quick Answers

- **What is this?** Heavy Duty Sink and Drain Unblocker 2 x 750ml - Powerful formula for indoor and outdoor use by one chem
- **How much does it cost?** ¥13923 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/493793921-heavy-duty-sink-and-drain-unblocker-2-x-750ml-powerful)

## Best For

- one chem enthusiasts

## Why This Product

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

## Key Features

- • **Dual Pack Value:** Two 750ml bottles for long-lasting drain defense 💧
- • **Overnight Power Boost:** Leave overnight for deep, effortless clearing 🌙
- • **Tool-Free Convenience:** Forget drain snakes—just pour & relax 🛠️
- • **Versatile Application:** Safe for all pipe types, indoors or outdoors 🌍
- • **Rapid Blockage Dissolver:** Clears fats, hair & soap residue in minutes ⚡

## Overview

One Chem Heavy Duty Sink and Drain Unblocker is a powerful, fast-acting liquid formula designed to dissolve tough blockages caused by fats, food, hair, and soap residue. Safe for all pipe types and effective both indoors and outdoors, it requires no tools—just pour, wait, and flush. Each pack includes two 750ml bottles, delivering reliable, heavy-duty drain clearing with minimal effort.

## Description

Product description HEAVY DUTY SINK UNBLOCKER: To tackle the build up on fats, foods, hair and soap residue in your bathroom or kitchen sink that is blocking your drains, One Chem's heavy duty sink and drain unblocker is specifically designed to instantly clear and dissolve the unwanted blockage quickly and efficiently. Contains 2 x 750ml Heavy Duty Drain Unblocker Directions Pour the entire bottle of heavy duty drain unblocker down the plughole, leave for a minimum of 3 hours (preferably overnight), and then flush the drain with hot water for at least 2 minutes.

Review: Leaked - Good at unblocking sink. But do go careful as it leaked in the bag it was in and seeped through. Make sure you wear gloves and cut the bag open over the bath or sink. Do Not open and take out over a carpet or bathmat as will take the colour out. I had to store one of the bottles in my mop bucket so has not to leak out, even though it's still in a thick plastic bag
Review: It worked! - I don't want to know how many chemicals are in it, because it works. And at the end of the day that's what you need. Leave in overnight is easy enough.

## Features

- HEAVY DUTY SINK UNBLOCKER: To tackle the build up on fats, foods, hair and soap residue in your bathroom or kitchen sink that is blocking your drains, One Chem's heavy duty sink and drain unblocker is specifically designed to instantly clear and dissolve the unwanted blockage quickly and efficiently
- NO DRAIN SNAKE NEEDED: No need to waste your time with drain rods, this product requires no tools or equipment as it swiftly dissolves any build up. Ideal for the kitchen or bathroom sink, however this Heavy Duty Sink & Drain Unblocker works on exterior drains just as well. In comparison to other drain cleaners and unblockers on the market, this product has a powerful formulation that achieves results in rapid speed
- BATHROOM CLEANING PRODUCTS: One Chem's fast acting, powerful and effective sink and drain unblocker liquid is perfectly safe to use on all pipe types. For the best results, pour the entire bottle of heavy duty drain unblocker down the plughole, leave for a minimum of 3 hours (preferably overnight) and finish off by flushing the drain with hot water for at least 2 minutes to completely free any blockages - it's really that easy!
- POWERFUL FORMULA: for indoor and outdoor use
- Contains 2 x 750ml Heavy Duty Drain Unblocker

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BM4PVJ5Y |
| Benefits | Quickly and efficiently clears blockages in sinks, safe for all pipes, usable indoors and outdoors, and requires no tools |
| Best Sellers Rank | 54,820 in Grocery ( See Top 100 in Grocery ) 253 in Drain Openers |
| Brand | One Chem |
| Brand Name | One Chem |
| Country of Origin | Turkey |
| Customer Reviews | 3.9 out of 5 stars 93 Reviews |
| Item Form | cylindrical liquid |
| Liquid Volume | 750 Millilitres |
| Manufacturer | Assured Products Limited |
| Model Number | Onec8562 |
| Number of Items | 2 |
| Number of items | 2 |
| Part Number | 0072392 |
| Product benefits | Quickly and efficiently clears blockages in sinks, safe for all pipes, usable indoors and outdoors, and requires no tools Product benefits Quickly and efficiently clears blockages in sinks, safe for all pipes, usable indoors and outdoors, and requires no tools See more |
| Scent | Unscented |
| Unit Count | 1500.0 millilitre |
| Unit count | 1500.0 millilitre |

## Product Details

- **Brand:** One Chem
- **Manufacturer:** Assured Products Limited
- **Scent:** Unscented
- **Unit count:** 1500.0 millilitre

## Images

![Heavy Duty Sink and Drain Unblocker 2 x 750ml - Powerful formula for indoor and outdoor use - Image 1](https://m.media-amazon.com/images/I/81AbCI53R6L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Leaked
*by F***T on 16 July 2023*

Good at unblocking sink. But do go careful as it leaked in the bag it was in and seeped through. Make sure you wear gloves and cut the bag open over the bath or sink. Do Not open and take out over a carpet or bathmat as will take the colour out. I had to store one of the bottles in my mop bucket so has not to leak out, even though it's still in a thick plastic bag

### ⭐⭐⭐⭐⭐ It worked!
*by E***A on 20 February 2026*

I don't want to know how many chemicals are in it, because it works. And at the end of the day that's what you need. Leave in overnight is easy enough.

### ⭐⭐⭐⭐ Drain cleaner
*by L***T on 3 July 2023*

Delivery was prompt. Good job each item was in a plastic bag, as one of the bottles had leaked and the chemical was all in the bottom of the bag.

## Frequently Bought Together

- One Chem Heavy Duty Sink and Drain Unblocker 2 x 750ml - Powerful formula for indoor and outdoor use
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**Shop now:** [https://www.desertcart.jp/products/493793921-heavy-duty-sink-and-drain-unblocker-2-x-750ml-powerful](https://www.desertcart.jp/products/493793921-heavy-duty-sink-and-drain-unblocker-2-x-750ml-powerful)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-17*