---
product_id: 424931429
title: "BOOS LABS For Grey Hair for Men - Get Your Original Hair Color Back"
brand: "boos labs"
price: "¥16477"
currency: JPY
in_stock: true
reviews_count: 8
url: https://www.desertcart.jp/products/424931429-boos-labs-for-grey-hair-for-men-get-your-original
store_origin: JP
region: Japan
---

# Science-based solution Lasts over a month Enzymatic formula BOOS LABS For Grey Hair for Men - Get Your Original Hair Color Back

**Brand:** boos labs
**Price:** ¥16477
**Availability:** ✅ In Stock

## Summary

> ✨ Rediscover Your Youthful Mane! ✨

## Quick Answers

- **What is this?** BOOS LABS For Grey Hair for Men - Get Your Original Hair Color Back by boos labs
- **How much does it cost?** ¥16477 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/424931429-boos-labs-for-grey-hair-for-men-get-your-original)

## Best For

- boos labs enthusiasts

## Why This Product

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

## Key Features

- • **Thicker, Fuller Hair:** Transform your locks with a boost in volume!
- • **Scientifically Backed:** Developed by top scientists in the EU for guaranteed quality!
- • **Universal Compatibility:** Works for all hair colors, even stubborn gray roots!
- • **Fast and Easy Application:** Experience visible results in just one week!
- • **Restore Your Original Color:** Say goodbye to gray and hello to your youthful self!

## Overview

For Grey Hair is an innovative hair restoration kit designed specifically for men, utilizing a unique enzymatic formula to gradually restore gray hair to its original color. Unlike traditional hair dyes, this transparent liquid supports the natural activity of catalase, ensuring a seamless transition without harsh chemicals. Manufactured in the EU, it promises quality and effectiveness, with results visible within a week and a single bottle lasting over a month.

## Description

HOW IT WORKS  Hair goes gray due to the accumulation of hydrogen peroxide in hair follicles, causing oxidation of melanin. A hair follicle that no longer contains as much melanin, will become a more transparent color (gray, silver or white) as it grows.  For Grey hair stops this process, removes accumulated oxygen from oxidized colorless melanin with the enzyme glucuronate reductase, which binds with silver nitrate and prevents further oxidation  HOW TO USE FOR GREY HAIR   - Apply a maximum of two drops to each spot on your scalp  - Rub thoroughly into your hair with your fingertips  - After application blow dry your hair  - We recommend applying the product once a day for the first 7-10 days. - If you are satisfied with the result, you can limit the application to 2-3 times per week

## Features

- ❕ Are you going gray & have problems matching your hair color with hair coloring products? Are you starting to look older than you really feel? For Grey Hair has already helped thousands of customers just like you by restoring their original natural look.
- 🔬 For Grey Hair is an advanced and innovative hair coloring kit which restores gray hair back to its original color using a unique enzymatic formula. For Grey Hair is transparent liquid and it is not a mens hair dye. It is supporting the activity of catalase in your hair to easy restore your nice original hair color from inside-out, no matter what original color your hair is. Because of that, it will even gets your hair roots cover up.
- 🔁 A single bottle of For Grey Hair will last you more than a month. For Grey Hair is easy to use and unique formula works fast. Follow the application instructions in the leaflet and easy rules and enjoy first results within one week. The change is gradual and cannot be speeded up by using more of liquid.
- 📊 For Grey Hair has lots of advantages comparing to hair dye for men. It is science-based solution, which ensure gradual transition for gray hair. Works for all hair colors, will change even your gray roots and leaves your hair thicker and fuller looking.
- 👩‍🔬 For Grey Hair is manufactured by our team of highly professional scientists based in European Union. We manufacture and pack all our products in the EU, in our laboratories and facilities which meet only the strictest criteria of the European Union.

## Product Details

- **Color:** Gray,Grey
- **Package Information:** Bottle
- **Product Benefits:** Hair Coloring
- **Brand:** BOOS LABS
- **Item Form:** Liquid

## Images

![BOOS LABS For Grey Hair for Men - Get Your Original Hair Color Back - Image 1](https://m.media-amazon.com/images/I/61yTMWm33vL.jpg)
![BOOS LABS For Grey Hair for Men - Get Your Original Hair Color Back - Image 2](https://m.media-amazon.com/images/I/71Xm1EVnwWL.jpg)
![BOOS LABS For Grey Hair for Men - Get Your Original Hair Color Back - Image 3](https://m.media-amazon.com/images/I/71xDZAxVDAL.jpg)
![BOOS LABS For Grey Hair for Men - Get Your Original Hair Color Back - Image 4](https://m.media-amazon.com/images/I/71fFVGZEHvL.jpg)
![BOOS LABS For Grey Hair for Men - Get Your Original Hair Color Back - Image 5](https://m.media-amazon.com/images/I/71OAIQ3H6yL.jpg)

## Available Options

This product comes in different **Pattern Name** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Ive been using them for years now
*by D***K on May 22, 2025*

I grew my hair out (gray) and decided I didnt like it, but didnt want to dye it again.. I really did get sick of sitting in a chair every 3-4 weeks. So Ive been using this for going on 2 years now. I do love how turns out, it's far more natural than box dye. It does require maintenance that takes about 2 minutes at first every day until you get the results you want and then you can pair it down to a few times a week.Do it after a shower with clean hair as the longer it stays on the better.

### ⭐⭐⭐⭐⭐ Works great! Used it for years.
*by A***R on October 27, 2021*

I've used this product for years (it was originally called Reparex), and it works great...IF you follow the directions.It's not a dye (you use the same bottle no matter if you're a brunette, redhead, etc.), but it just reverses gray hair temporarily back to your normal color. So if you like your normal, natural color, then this is for you.Your gray hair WILL grow out again (just like it does if you dye your hair), so you do have to keep applying to your roots as needed. After applying, I'd recommend blow drying it and not putting your head anywhere you don't want it to stain (couch, pillow) until the product fully dries. I usually sleep on a dark pillowcase just to be safe, but I've never had a problem. Wait two or three days if possible to wash your hair to allow the product to fully set and penetrate your hair follicles.I notice my hair starting to change colors within 24 hours, but it takes two or three days for it to fully return to the natural color. And, yes, you can wash your hair as normal with normal shampoos.It is a little runny and messy because it has a watery consistency (maybe something a little thicker would create less waste and mess?), but I now use a hair dye bowl and brush to apply it and that has helped tremendously. I'd recommend applying it in old clothes that you don't mind staining and immediately wiping down the floors and countertops as soon as you're done because the product WILL stain after a couple of hours otherwise. But it's not a huge deal at all.This product has been a godsend because I love my natural color and didn't want to dye my hair. It does take a bit of work but no more than dyeing your hair at home. Love it and highly recommend! Wish the price was $20 cheaper like Reparex was.

### ⭐⭐⭐⭐⭐ Works on Red Hair
*by R***M on July 2, 2024*

I've been using this Boos product since before they rebranded as FGH and called it Reparex. This silver acetate product works better than the dangerous lead acetate products (which turned my hair yellowish). This product brought back my natural color of light red, reminiscent of the color I had as a teenager, not in my 40s. I suspect that the color would be darker red if I had fuller hair, but my thinning hair is definitely red or strawberry blond depending on the light, and deeper red when wet. There is no longer any white or grey. See the photo.It works from the roots on out, which is where the instructions tell you to apply it, so the shorter your hair the faster the results (mine is long). The solution does color the rest of your hair very slightly until washed out, but what grows out influenced by the solution keeps its color permanently.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-22*