How long will the bottle last for short cropped hair?

If you can draw out a reasonably accurate measure (e.g. I use an old syringe with no needle) you should easily get three goes and perhaps four. It shows on the bottle how much is inside divide by 4 see how you get on.

Once you open it and use some do you have to throw the rest away or can you save it for next times use?

I use it for facial hair. In a plastic mixing container (e.g., a store bought salsa, hummus pot, etc..,) I mix 2 even parts of about a 5p size each. One box will last me about 1 year.

If I dont mix whole quantity once, can I use remaining later ?

I wouldn’t recommend it, because you have no idea whether it would be effective as when you first mix it and might end up with a less desirable result

Can this dye be used on pubic hair

No it's harsh for normal skin use. You don't wanna be itching down there! For the head only for sure.

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Just for men Original Formula Dark Brown Black Hair Dye, Restores Original Colour for a Natural Look H45

Product ID: 48502555

Details

Brand
Just For Men
Colour
H45 - Dark
Hair type
All
Item form
Liquid
Material Type Free
Ammonia Free
Material feature
Ammonia Free

⏳5-minute fast action

💧No-drip, easy shampoo-in

🛡️Grey Target Technology

¥2372

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Description

🕶️ Own your look, ditch the grey—fast, flawless, and fuss-free!

NOURISHING CARE - Vitamin-enriched conditioners with chamomile & aloe for healthier, manageable hair.
LONG LASTING IMPACT - One application lasts up to 6 weeks—stay sharp without constant touch-ups.
MESS FREE APPLICATION - No-drip formula means zero hassle, just smooth, even coverage.
INSTANT CONFIDENCE BOOST - Covers grey in just 5 minutes—because your time is valuable.
PRECISION GREY TARGETING - Blends multiple shades for a natural, undetectable finish.

Just For Men Original Formula Dark Brown Black Hair Dye offers a quick 5-minute application that targets grey hair with a unique multi-shade blend for a natural look. Its no-drip, easy shampoo-in formula ensures mess-free use, while vitamin-enriched conditioners promote healthier hair. One application delivers up to 6 weeks of lasting coverage, making it the go-to solution for professional men seeking effortless, natural grey coverage.

Specifications

ASIN	B000IB0G50
Benefits	Gray Coverage
Best Sellers Rank	142 in Beauty ( See Top 100 in Beauty ) 7 in Permanent Hair Colour
Brand	Just For Men
Brand Name	Just For Men
Colour	H45 - Dark Brown
Container Type	Box
Country Of Origin	USA
Customer Reviews	4.4 out of 5 stars 1,880 Reviews
Full Cure Time	5 Minutes
Global Trade Identification Number	05010934001849
Hair Color Permanence	Permanent
Hair Type	All
Hair type	All
Item Form	Liquid
Item Type Name	Just For Men Hair Color Dark Brown
Item Weight	28 Grams
Item form	Liquid
Manufacturer	Combe
Manufacturer Contact Information	Combe International Ltd, Leatherhead, Surrey, KT22 (RX
Manufacturer Part Number	UK OF H45
Material Features	Ammonia Free
Material Type Free	Ammonia Free
Model Number	UK OF H45
Number of Items	1
Package Size Name	60 ml
Package information	Box
Product benefits	Gray Coverage
Recommended Uses For Product	Grey Hair Coverage, Coloring for Men
Suitable Hair Colour	Dark Brown
Unit Count	1 count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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¥2372

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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