---
product_id: 459554322
title: "4.0 Darkest Brown Permanent Hair Dye"
brand: "josh wood colour"
price: "¥21169"
currency: JPY
in_stock: true
reviews_count: 7
category: "Josh Wood Colour"
url: https://www.desertcart.jp/products/459554322-4-0-darkest-brown-permanent-hair-dye
store_origin: JP
region: Japan
---

# Ammonia-free gentle formula 100% grey coverage Vegan & cruelty-free 4.0 Darkest Brown Permanent Hair Dye

**Brand:** josh wood colour
**Price:** ¥21169
**Availability:** ✅ In Stock

## Summary

> 🌟 Unlock your ultimate dark brown glow—because your hair deserves the best!

## Quick Answers

- **What is this?** 4.0 Darkest Brown Permanent Hair Dye by josh wood colour
- **How much does it cost?** ¥21169 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/459554322-4-0-darkest-brown-permanent-hair-dye)

## Best For

- josh wood colour enthusiasts

## Why This Product

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

## Key Features

- • **Gentle on Your Hair:** Ammonia-free and PPD-free formula ensures your hair stays soft, shiny, and healthy after every application.
- • **Ethical Beauty Choice:** 100% vegan, vegetarian, and cruelty-free—because looking good should feel good too.
- • **Flawless Grey Coverage:** Achieve 100% coverage for a naturally rich darkest brown tone that hides every strand of grey.
- • **Personalised Colour Support:** Expert advice just an email away—get tailored shade recommendations to match your unique hair.
- • **Salon-Quality Results at Home:** Designed by world-renowned colourist Josh Wood for a professional finish without the salon price tag.

## Overview

Josh Wood Colour 4.0 Darkest Brown Permanent Hair Dye delivers 100% grey coverage with a gentle, ammonia-free formula that conditions hair while colouring. Developed by a leading hair colourist, it’s vegan, cruelty-free, and designed to provide a natural, shiny finish. Perfect for professionals seeking salon-quality results at home with personalised expert support.

## Description

Say hello to natural-looking, feel-good dark brown hair colour. Designed by the world's leading hair colourist, Josh Wood, to cover greys without compromising the health of your hair. Formulated without ammonia or PPD, Josh Wood Colour hair dye is kind to hair and leaves it soft, shiny and with a natural colour finish. To cover grown-out roots, only apply permanent colour to the regrowth. Do not apply permanent colour over highlighted or balayage mid-lengths and ends, it will colour over and remove this effect from your hair.If you want all-over colour, apply permanent colour to your roots and mid-lengths, only colouring your ends for the last 10 minutes of development time for a freshly-coloured salon finish. Need advice on choosing a shade? Email a photo of your hair to expert@joshwoodcolour.com and our team of colourists will make a personalised recommendation just for you. WARNINGS/CAUTION: HAIR COLOURANTS CAN CAUSE SEVERE ALLERGIC REACTIONS. READ AND FOLLOW INSTRUCTIONS. THIS PRODUCT IS NOT INTENDED FOR USE ON PERSONS UNDER THE AGE OF 16. TEMPORARY ‘BLACK HENNA’ TATTOOS MAY INCREASE YOUR RISK OF ALLERGY. DO NOT COLOUR YOUR HAIR IF: YOU HAVE A RASH ON YOUR FACE OR SENSITIVE, IRRITATED AND DAMAGED SCALP; YOU HAVE EVER EXPERIENCED ANY REACTION AFTER COLOURING YOUR HAIR; YOU HAVE EXPERIENCED A REACTION TO A TEMPORARY ‘BLACK HENNA’ TATTOO IN THE PAST. THIS PRODUCT CONTAINS INGREDIENTS THAT MAY CAUSE SKIN IRRITATION ON CERTAIN INDIVIDUALS, AND A PRELIMINARY TEST SHOULD FIRST BE PERFORMED FOLLOWING DIRECTIONS PRINTED ON THE INTERNAL LEAFLET. THIS PRODUCT MUST NOT BE USED FOR DYEING THE EYELASHES OR EYEBROWS. TO DO SO MAY CAUSE BLINDNESS. AVOID CONTACT WITH EYES. WEAR SUITABLE GLOVES. RINSE EYES IMMEDIATELY IF PRODUCT COMES INTO CONTACT WITH THEM. RINSE HAIR WELL AFTER APPLICATION. IF ANY ADVERSE REACTION OCCURS, STOP IMMEDIATELY USING THE PRODUCT, AND SEEK MEDICAL ASSISTANCE. KEEP OUT OF REACH OF CHILDREN.

Review: It damaged my hair! - My hair has become so dry and brittle. Now I’m using oil baths and hair masks to save my damaged hair.
Review: ممتاز

## Features

- Covers 100% of grey
- Easy to use
- Ammonia free & gentle formula
- Vegan, vegetarian and cruelty free
- Conditioning

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09T6VRFVX |
| ASIN  | B09T6VRFVX |
| Best Sellers Rank | #52,618 in Beauty ( See Top 100 in Beauty ) #688 in Permanent Hair Color |
| Customer reviews | 4.3 4.3 out of 5 stars (569) |
| Date First Available  | 8 April 2022 |
| Manufacturer | Josh Wood Colour |
| Manufacturer  | Josh Wood Colour |
| Manufacturer reference | 7000227 |
| Manufacturer reference  | 7000227 |
| Package Dimensions | 17.5 x 9.6 x 7.4 cm; 260 g |
| Package Dimensions  | 17.5 x 9.6 x 7.4 cm; 260 g |

## Product Details

- **Brand:** Josh Wood Colour
- **Colour:** Dark Brown
- **Item form:** Liquid
- **Package information:** Tube
- **Product benefits:** Natural-looking Color, Full Grey Coverage, Conditions Hair

## Images

![4.0 Darkest Brown Permanent Hair Dye - Image 1](https://m.media-amazon.com/images/I/41KYCPa3YUL.jpg)

## Customer Reviews

### ⭐⭐ It damaged my hair!
*by S***B on 18 July 2024*

My hair has become so dry and brittle. Now I’m using oil baths and hair masks to save my damaged hair.

### ⭐⭐⭐⭐⭐ Review
*by A***Q on 30 October 2025*

ممتاز

### ⭐⭐⭐⭐ Review
*by A***A on 24 March 2025*

سعر جيد مقابل الجودة

## Frequently Bought Together

- Josh Wood Permanent Colour 4.0 (Darkest Brown) Celebrity-approved ammonia-free hair dye - Leaves hair super shiny and hydrated with 100% grey coverage - Natural-looking and Vegan
- Glaze Supergloss Color Conditioning Gloss – Hydrating Semi-Permanent Color Hair Gloss & Shine Boost – Color Depositing Mask - Vegan, Cruelty-Free – 190ml - Chocolate Gleam - Warm Medium Dark Brown
- Josh Wood Hair Gloss (Smoky Brunette) - Semi-permanent gloss, removes red tones on dark hair, refreshes and conditions - Lasts up to 6 washes - 100% Vegan - Cream (100ml)

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**Shop now:** [https://www.desertcart.jp/products/459554322-4-0-darkest-brown-permanent-hair-dye](https://www.desertcart.jp/products/459554322-4-0-darkest-brown-permanent-hair-dye)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-19*