Just For Men 50A Darkest Brown-Black Shampoo-in Color
Get rid of those grays easily with our shampoo-in color that takes only 5 minutes and lasts up to 8 weeks. Formulated with olive oil, vitamin E, and keratin to strengthen hair, this product helps improve hair health while covering gray hairs. Available in an unlimited range of shades, including the darkest brown-black. Free of ammonia, making it gentle on hair and safe for regular use.
Product Features
- Removes gray hair in just 5 minutes
- Color lasts up to 8 weeks
- Contains olive oil, vitamin E, and keratin for hair strength
- Free of ammonia
- Available in multiple shades, including darkest brown-black
| Feature | Detail |
|---|---|
| Color Type | Darkest Brown-Black |
| Application Time | 5 minutes |
| Duration | Up to 8 weeks |
| Key Ingredients | Olive oil, vitamin E, keratin |
| Ammonia Free | Yes |
FAQ
How long does the color last after application?
The color lasts up to 8 weeks.
Is this product safe for daily use?
Yes, it is free of ammonia and formulated to be gentle on hair, making it suitable for regular use.
Can I use this product on all hair types?
The product is designed for men’s hair and works best on most hair types, but results may vary depending on individual hair texture and condition.

Thomas Black –
I’ve used this shampoo-in color for the first time and it worked perfectly. The gray hairs turned to a deep brown-black in just 5 minutes. My hair feels stronger and smoother after each use. No ammonia smell, which is a big plus.
Chloe Smith –
The color coverage is excellent, especially on my thinning areas. It took less than 5 minutes to apply and the result lasted about 7 weeks. I’d recommend it for men who want a quick, effective solution.
Andrew Marshall –
I was skeptical at first, but the product actually gave me a rich, natural-looking dark brown-black. My hair feels healthier after use, and the formula doesn’t dry it out. Great value for the results.