Disclosure: As an Amazon Associate, we earn from qualifying purchases. If you click a link on this page and make a purchase, we may receive a small commission at no extra cost to you.
Gray in a beard or mustache can show up unevenly, so the main challenge is getting fast coverage without choosing a shade that looks too dark. Just For Men Mustache & Beard is made specifically for facial hair and processes in five minutes, but shade choice and the required allergy test matter just as much as speed. The Amazon link in this review points to Medium Brown M-35, while the wider Mustache & Beard line includes 12 shades from Blond to Jet Black. This review explains what the M-35 kit does well, where it needs care, and who should consider a different type of facial-hair color.
Quick Verdict
Rating: 8.5/10, Recommended with caveats
Best For: Men who want full gray coverage on a beard, mustache, goatee, or sideburns in about five minutes.
Bottom Line: The fast brush-in process, 12-shade range, and up to three uses per box make this a practical option for routine gray coverage. The tradeoff is that permanent hair color can cause allergic reactions, so you need to follow the package directions, perform the 48-hour skin allergy test, and avoid using it on eyebrows or eyelashes.
| Specification | Detail |
|---|---|
| Brand | Just For Men |
| Product | Mustache & Beard facial-hair color |
| Linked variant | Medium Brown M-35 |
| Color type | Long-lasting facial-hair dye, designed to last until gray grows back |
| Processing time | 5 minutes |
| Shade range | 12 shades, Blond through Jet Black |
| Formula highlights | Biotin, aloe, and coconut oil |
| Applications per box | Up to 3, depending on facial-hair length and coverage area |
| Application | Mix color base and developer, brush onto facial hair, wait 5 minutes, rinse, then shampoo |
| Best use | Beards, mustaches, goatees, soul patches, and sideburns |
| Key safety note | Perform the 48-hour skin allergy test before each use and do not use on eyebrows or eyelashes |
What Is the Just For Men Mustache & Beard Medium Brown M-35?
Just For Men Mustache & Beard is a full-coverage facial-hair color made for coarse beard and mustache hair. The linked Medium Brown M-35 version is one shade in a 12-shade line. It uses a mix-and-brush application, processes in five minutes, and is designed to cover gray rather than gradually blend it over repeated washes.
The product is useful when you want a more uniform beard color without a long coloring session. Just For Men says the color will not simply wash out and instead lasts until new gray hair grows back. That makes it more committed than a one-day touch-up product, but faster than a gradual color routine that may take multiple uses to reach your preferred result.
Who Should Buy It?
Best For
- You want full gray coverage on facial hair in about five minutes.
- You prefer a brush-in formula that works on a beard, mustache, goatee, soul patch, or sideburns.
- You want a reusable box that can provide up to three applications, depending on how much facial hair you color.
Skip If
- You want temporary color that washes out when you wash it.
- You cannot complete the required 48-hour allergy test before coloring.
- You want a product for eyebrows or eyelashes, because this product is not intended for those areas.
Before You Buy: The Amazon URL in this article points to Medium Brown M-35. If your natural facial hair is noticeably lighter or darker, confirm the selected shade before ordering. Just For Men advises choosing the lighter shade when you are deciding between two shades.
Five-Minute Gray Coverage
The biggest practical advantage is speed. You mix the color base and developer, brush the mixture through the facial hair, wait five minutes, rinse, and shampoo. The brush helps spread color through coarse hairs and lets you focus on gray areas without using the product like a full-head hair dye.
Five minutes is also a limit you should take seriously. Leaving hair color on longer can produce a darker result, so setting a timer is better than estimating. The product works best as a controlled process: prepare everything first, apply evenly, then rinse when the instructions tell you to.
Shade Matching and Medium Brown M-35
The Mustache & Beard line covers 12 shades from Blond to Jet Black, and the linked ASIN is Medium Brown M-35. That matters because a beard can look artificial when the chosen color is much darker than the surrounding hair. If you are between two shades, the brand’s guidance is to start lighter because you can move darker later.
Medium Brown M-35 makes the most sense when your natural beard color sits around a true medium brown. It is not a lightening product for dark facial hair. The goal is gray coverage and color matching, not changing naturally dark beard hair into a lighter shade.
Formula and Hair Feel
Current Just For Men product information highlights biotin, aloe, and coconut oil in the Mustache & Beard formula. These ingredients are presented as conditioning additions that help the facial hair feel soft and manageable while you color it.
It is better to view those ingredients as formula extras, not as a hair-growth treatment. The main job of this kit is gray coverage. If your main concern is beard thinning, skin irritation, or hair loss, hair color is not a substitute for medical or dermatology advice.
How to Use It Correctly
Correct application matters more than applying extra product. Read the enclosed leaflet before every use because safety instructions and mixing directions come first.
- Complete the skin allergy test 48 hours in advance. Do this before each use as directed on the package.
- Prepare the area. Wear the supplied gloves and protect clothing and nearby surfaces from color.
- Mix the color base and developer. Follow the package directions and mix only what you need for the area you plan to cover.
- Brush through the facial hair. Start where gray is most visible and work for even coverage.
- Set a five-minute timer. Do not extend the processing time just to chase a darker result.
- Rinse and shampoo. Rinse the color out thoroughly, then wash the facial hair as directed.
Pro Tip: If skin staining is a concern, keep the application inside the beard line and wipe accidental color from skin promptly. A brand representative also recommends a thin layer of cold cream or petroleum jelly along the hairline to help reduce staining.
Skin Safety and Materials
This is permanent hair color, so the safety warnings are more important than the conditioning ingredients. The package directions require a 48-hour skin allergy test before each use, even if you have used hair color before without a reaction. Hair-color allergies can develop over time, so previous trouble-free use does not remove the need for the test.
The product should not be used on eyebrows or eyelashes, and you should avoid eye contact. Retail label information for the M-35 variant also lists ingredients such as hydrogen peroxide, resorcinol, and phenylenediamines in the color system. If you have had a previous hair-color reaction, have irritated or damaged skin in the application area, or have another safety concern, follow the package warnings and ask a qualified health professional before using hair color.
How It Performs in Real Use
For a Full Beard With Visible Gray
The brush-in format is well suited to a beard with scattered or widespread gray because you can work the mixture through coarse hair and target the areas that need coverage. The five-minute processing time keeps the routine short, but even distribution is important if your beard is dense.
For a Mustache, Goatee, or Sideburn Touch-Up
Smaller facial-hair areas can use less mixture than a full beard, which is why one box can provide multiple applications. The brand states up to three uses per box, although the actual number depends on beard length and how much area you cover.
For Recurring Gray Regrowth
The color is designed to stay in the treated hair until gray grows back, so maintenance is based on regrowth rather than the color washing away after a few shampoos. That can be convenient if you want full coverage, but it also means you should match the shade carefully because the result is not a one-day commitment.
For a First-Time Beard-Color User
The basic steps are simple, but first-time users should plan ahead because the allergy test needs to happen 48 hours before application. Choosing a lighter shade when you are uncertain can also reduce the chance of an overly dark first result.
Pros and Cons
Pros
- Five-minute processing is fast for full gray coverage.
- The 12-shade range gives you more room to match natural facial-hair color.
- The brush-in method is designed for coarse beard and mustache hair.
- Biotin, aloe, and coconut oil are included as conditioning formula additions.
- Up to three applications per box can make touch-ups more efficient.
Cons
- You must plan 48 hours ahead for the required allergy test.
- Shade selection can take trial and error, especially when your beard has several natural tones.
- It is not intended for eyebrows or eyelashes, and it is less flexible than a temporary wash-out color.
Is It Worth the Price?
Just For Men Mustache & Beard sits in the everyday grooming category rather than the premium salon-color category. Its value comes from the combination of a five-minute process, a dedicated facial-hair brush, a broad shade range, and the possibility of up to three applications from one box.
It is a strong value if you want quick, repeatable gray coverage and you already know your shade. It is less appealing if you want temporary color, gradual blending, or a product you can apply at the last minute without planning for an allergy test.
How It Compares to Alternatives
If you want gradual gray reduction instead of full coverage in one session, Just For Men Control GX Beard Wash is designed to reduce gray a little at a time with repeated washes. If you want temporary color that washes out when you wash it, Just For Men 1-Day Beard & Brow Color is a better match and can also be used on eyebrows.
Mustache & Beard makes the most sense when you want full facial-hair coverage in five minutes and are comfortable with a longer-lasting result. Control GX gives you more control over gradual change, while 1-Day Beard & Brow Color gives you the least commitment.
Frequently Asked Questions
How long does Just For Men Mustache & Beard color last?
Just For Men says the color will not wash out and lasts until gray hair grows back. Your touch-up schedule therefore depends more on regrowth than on a fixed number of shampoos.
Which shade does the Amazon link in this review open?
The linked ASIN corresponds to Medium Brown M-35. The Mustache & Beard product line has 12 shades, so verify the selected variant before ordering if Medium Brown is not your natural match.
What should I do if I am between two shades?
Just For Men recommends choosing the lighter shade when you cannot decide between two options. Starting lighter is usually easier to manage than getting a result that looks too dark.
Can I use Just For Men Mustache & Beard on my eyebrows?
No. Product warnings state that Mustache & Beard should not be used on eyebrows or eyelashes. If you need eyebrow color, use a product specifically labeled for eyebrow use.
Do I need a skin allergy test every time?
Yes. The package guidance calls for a 48-hour skin allergy test before each use, even if you have used hair color before without a problem. Follow the enclosed leaflet for the exact test method.
Can I use it on head hair?
Just For Men positions Mustache & Beard specifically for facial hair and recommends its head-hair products for scalp hair. Use the product only as directed on the package.
How many applications are in one box?
The brand advertises up to three applications per box. The actual number depends on how long and dense your facial hair is and how much area you color each time.
What is the most common application mistake to avoid?
Do not guess the processing time or leave the color on longer to force a darker shade. Choose the closest shade, use a timer for the five-minute processing period, and follow the package directions for mixing, rinsing, and safety.
The Bottom Line
Just For Men Mustache & Beard Medium Brown M-35 is a good fit if you want fast, full gray coverage on facial hair and prefer a five-minute brush-in routine. Its main strengths are speed, 12 shade choices, and up to three uses per box, while its main limitation is the need for careful shade matching and strict allergy-test and eye-area safety precautions.
If you want gradual or one-day color instead, choose a product built for that type of result.
Ready to Buy?
Check the latest price and confirm that Medium Brown M-35 is the shade you want before you decide.
