If gray hairs are becoming more noticeable in your beard or mustache, Just For Men Mustache & Beard Dye in Medium Brown M-35 is designed as a quick, at-home color option specifically for facial hair. Its main advantage is the short five-minute processing time and a brush-based application system, while the biggest consideration is that choosing the right shade and following the allergy-test instructions are important for a natural-looking result.
For men who want to reduce the appearance of gray without visiting a salon, this single-pack dye offers a practical approach with enough product for up to three applications, depending on beard size and how much product is used.
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What is Just For Men Dye M-35 Medium Brown?

Just For Men M-35 Medium Brown is a convenient facial-hair coloring kit for men who want to cover gray in a beard, mustache, goatee, soul patch, or similar facial-hair styles. The five-minute processing time, included application brush, and potential for multiple applications make it practical for occasional touch-ups.
The main drawback is that Medium Brown may not be the right match for every beard, especially if your natural hair is significantly lighter or darker. The formula also contains several hair-coloring chemicals and fragrance, so the required 48-hour skin allergy test should not be skipped.
Key Specifications
- Brand: Just For Men
- Product: Mustache & Beard Hair Color
- Shade: Medium Brown M-35
- Item form: Liquid
- Package: Single box
- Recommended use: Beard, mustache, and facial-hair coloring
- Hair type: All hair types according to the supplied listing
- Suitable for: Gray facial hair
- Processing time: 5 minutes
- Applications: Up to 3 applications per box, depending on use
- Application: Brush-in
- Included: Application brush and gloves
- Key listed ingredients: Keratin, biotin, coconut oil, aloe, colloidal oatmeal, and hydrolyzed keratin
- Formula: Ammonia-free according to the supplied product description
- Item weight: 2.5 oz
- UPC: 011509049032
- ASIN: B00IDCV49I
Performance & Features
1. Five-Minute Processing Time

One of the most useful features is the five-minute processing time listed in the directions.
For someone coloring facial hair at home, a short processing period makes the routine easier to fit into a normal morning or evening. You mix the color base and developer, brush the product onto the facial hair, wait five minutes, and then wash it out.
The short timing does not mean you should leave the product on for less or more time based on guesswork. Following the enclosed instructions is important, particularly because facial skin can be sensitive.
2. Brush-Based Application
The included brush is designed to distribute the color across facial hair.
This is particularly useful for beards and mustaches because you can work the product through specific areas rather than applying it like shampoo. It can also make targeted gray touch-ups easier when gray begins appearing again between full applications.
For better control, take your time around the edges of the mustache and beard. An old towel is also useful because hair-color products can stain fabrics.
3. Designed for Different Facial-Hair Styles

The product can be used on several common facial-hair styles, including:
- Beards
- Mustaches
- Goatees
- Soul patches
- Other facial-hair areas
This flexibility makes the kit more useful than a product designed around only one facial-hair style.
It is especially practical for men who don’t want to recolor their entire beard every time a few gray hairs become visible. The supplied product information states that it can be reapplied as needed as gray hair grows back.
4. Keratin, Biotin, Aloe, and Coconut Oil
The formula includes keratin, hydrolyzed keratin, biotin, aloe vera extract, coconut oil, and colloidal oatmeal, among other ingredients.
These ingredients may sound familiar from hair and personal-care products, but it is important not to interpret their presence as proof that the dye will provide a particular cosmetic or health benefit. Their inclusion is part of the product’s formulation; individual results can vary.
The supplied product description also identifies the formula as ammonia-free and says it is designed for coarse facial hair.
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What Makes Just For Men M-35 Different?

Facial hair is often coarser than the hair on your head, and this product is specifically formulated for mustaches and beards rather than being positioned as a general scalp-hair dye.
That matters in everyday use because the product is designed around the shorter, thicker facial hairs where gray strands can stand out against darker growth.
The Medium Brown M-35 shade is intended for men looking to bring gray facial hair closer to a medium-brown appearance. If you’re between two shades, the supplied instructions recommend starting with the lighter option rather than immediately choosing a darker color.
How to Use Just For Men M-35

The basic process is straightforward:
Step 1: Perform the Allergy Test
The product instructions call for a skin allergy test 48 hours before use.
This is one of the most important steps in the entire process. Hair-color products can cause reactions in some people, so do not skip the test simply because you have used hair dye before.
Step 2: Mix the Products
Mix the color base and developer in the provided tray according to the enclosed instructions.
Step 3: Apply With the Brush
Use the supplied brush to apply the mixture to the beard or mustache.
Try to keep the application controlled, especially around areas where you don’t want the product to touch the skin.
Step 4: Wait Five Minutes
The supplied directions specify a five-minute processing time.
Don’t improvise the timing. Use the enclosed leaflet as the final reference because packaging instructions can change.
Step 5: Rinse and Wash
Rinse the product out thoroughly and shampoo as directed.
It’s also sensible to rinse the shower area afterward to reduce the chance of staining.
Pros & Cons of Just For Men M-35 Medium Brown

Pros
- Five-minute processing time makes it convenient for at-home use.
- Designed specifically for mustaches and beards.
- Medium Brown M-35 provides a straightforward option for reducing visible gray.
- Up to three applications per box, depending on beard size and product usage.
- Included brush helps with targeted application.
- Suitable for beards, mustaches, goatees, and soul patches.
- Formula includes keratin, biotin, aloe, and coconut oil.
- Product description identifies the formula as ammonia-free.
- Can be used for touch-ups as gray hair grows back.
Cons
- Shade selection requires some care, particularly if your natural beard color doesn’t closely match Medium Brown.
- Hair-coloring ingredients can cause allergic reactions in some individuals, making the 48-hour allergy test essential.
- Fragrance is included in the listed ingredients, which may be a consideration for people sensitive to fragranced products.
- Coloring products can stain towels, nails, bathroom surfaces, and clothing if handled carelessly.
- Results can vary depending on facial-hair color, thickness, and application.
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Is Just For Men M-35 Medium Brown Budget-Friendly?
The value proposition is mainly about convenience and multiple potential applications, rather than simply the size of the box.
Because the product can provide up to three applications depending on how much facial hair you have and how much product you use, one package may last beyond a single coloring session.
For someone who regularly touches up gray facial hair at home, that can make the product a reasonable-value grooming purchase. The value is less compelling for someone who rarely colors facial hair or only has a very small amount of gray.
What Users Should Know About Shade Selection

Choosing the right shade is arguably more important than choosing between small differences in product features.
M-35 is Medium Brown, so it makes the most sense for someone whose desired facial-hair color is around that range.
If you are uncertain between two shades, the supplied product guidance recommends choosing the lighter shade first. Going too dark can make newly colored facial hair look more noticeable than intended.
A natural-looking result also depends on the amount of gray, your original beard color, hair density, and how evenly the product is applied.
Who Should Buy This vs. Who Should Skip It
Who Should Buy It?
Consider Just For Men M-35 if you:
- Want to reduce the appearance of gray in your beard or mustache.
- Prefer doing facial-hair coloring at home.
- Want a product specifically designed for facial hair.
- Like the convenience of a five-minute processing time.
- Have a facial-hair color that suits the Medium Brown shade.
- Want a product that can also be used for occasional gray touch-ups.
Who Should Skip It?
You may want to consider another option if you:
- Prefer to keep your natural gray facial hair.
- Need a shade significantly lighter or darker than Medium Brown.
- Prefer completely fragrance-free grooming products.
- Have previously experienced reactions to hair-color products.
- Don’t want to perform an allergy test before using a dye.
- Prefer professional salon coloring rather than at-home application.
If you have known allergies or concerns about using hair-coloring products, reviewing the complete ingredient list and consulting an appropriate healthcare professional can help you make a safer decision.
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Just For Men M-35 vs. Alternatives
Just For Men Mustache & Beard in Another Shade

The most obvious alternative is another shade from the same Mustache & Beard range. The supplied product information indicates that the line includes 12 shades ranging from Blond to Jet Black.
This makes another shade worth considering if Medium Brown doesn’t closely match your natural facial hair.
VOLT Grooming Temporary Instant Beard Color for Men

VOLT Grooming Temporary Instant Beard Color for Men is another option for someone who wants more personalized color selection and application.
The trade-off is convenience and cost: at-home dye gives you more control over when you color, while professional service can provide more individualized shade guidance.
Safety and Ingredient Considerations
The ingredient list includes colorants and developer ingredients such as resorcinol, toluene-2,5-diamine, p-aminophenol, m-aminophenol, and hydrogen peroxide.
These are not ingredients to ignore simply because the product is marketed for home use. The manufacturer-provided instructions specifically call for a skin allergy test 48 hours before application and recommend using the supplied gloves.
Keep the product away from children, avoid unnecessary contact with the eyes, and follow the enclosed safety instructions. If you experience an unexpected reaction, stop using the product and seek appropriate medical advice.
Conclusion
Just For Men Mustache & Beard Dye Medium Brown M-35 is a practical option for men who want a quick, at-home way to reduce visible gray in their facial hair. Its five-minute processing time, dedicated facial-hair application brush, and potential for multiple applications make it convenient for regular touch-ups.
The biggest decision is the Medium Brown shade. If it closely matches the color you want, the product offers a simple grooming routine; if your natural hair is substantially different, another shade or professional coloring may make more sense.
For the best experience, treat the allergy test and application instructions as essential rather than optional. The product delivers the most value for someone who wants convenient gray coverage at home and is comfortable maintaining that color as new gray hairs grow in.
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