Just For Men Ultra A45 Dark Brown Hair Colour

Just For Men Ultra A45 is a dark brown, comb-in hair colour designed for targeted grey coverage. The listing says application takes 10 minutes and claims the colour lasts up to six weeks, though customer feedback reports mixed coverage and longevity.

At a glance

The comb-in applicator is presented for controlled application to areas with grey.
The listing says to comb in the colour and shampoo it out after 10 minutes.
The listing claims it stops developing before becoming too dark and can last up to six weeks.
The product is described as ammonia free, with a temporary permanence classification also shown.

Price

£4.96Save 44%

Reference price: ~~£8.90~~

Price checked: 12 Nov 2026

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Often bought together

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Just for men Original Formula Dark Brown Black Hair Dye H45 | Hair dye that targets grey hair with natural hair colour . Long lasting formula whilst rejuvenating hair for a fuller look

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Pros and cons

Pros

The comb-in application is intended to make localised touch-ups easier than applying colour across the whole head.
The listed 10-minute application time may suit a short at-home colouring routine.

Technical specifications

14 specifications

Identity
Brand	Just For Men
Model	UK ULTRA A45
Colour	dark_brown
Form	Cream
Suitable hair colour	Dark Brown
Hair type	All
Permanence	Temporary

Use and product details
Application time	1E+1 Minutes
Number of items	1
Ammonia-free claim	Ammonia Free
Material features	Gentle, Nourishing
Product benefits	Nourishing, Natural-Looking Color, Easy Application
Dimensions listed	4 x 3.5 x 2 cm; 70 g
Country of origin	USA

What to know before buying

Listing details to confirm

The listing describes the colour as temporary while also claiming it lasts up to six weeks, so permanence and duration are inconsistent. Follow the enclosed leaflet for application and timing. Hair colourants can cause severe allergic reactions. Carry out the specified skin allergy test 48 hours before each use and follow all listed warnings, including not using it on eyelashes or eyebrows.

Who is it for?

A good fit for

People seeking dark brown hair colour with a comb-in applicator for targeted grey touch-ups.
Buyers looking for a short, at-home application routine and willing to follow hair-colour safety directions.

Less suited to

Anyone who has had a reaction to hair colour or a temporary black henna tattoo, or has an irritated or damaged scalp, unless a doctor advises otherwise.
Anyone seeking a product specifically described as permanent, since the listing labels it temporary despite its duration claim.

Just For Men Ultra A45 Dark Brown Hair Colour · photo 2 — Additional product photo 2

Customer reviews on Amazon

4 / 5 · 1,662 ratings

5 stars57%57%
4 stars16%16%
3 stars11%11%
2 stars4%4%
1 star12%12%

Customer feedback highlights ease of use and natural-looking results, while reports on effectiveness, grey coverage, longevity and value are mixed. Some customers also report skin irritation, including blisters and staining. The comb-in design and stated six-week duration may matter to touch-up buyers, but those claims do not ensure uniform coverage or lasting results for every user. The aggregate rating leans positive, but ratings alone do not explain individual experiences.

Positive themes

Customers are reported to appreciate ease of use and a natural appearance.

Negative themes

Some customers report that the colour does not work well or cover grey properly.
Some report colour washing out after a week and skin irritation, including blisters or stained skin.

Mixed feedback

Effectiveness, coverage, longevity and value for money receive mixed feedback.

Frequently asked questions

How long does application take?

The listing says to comb it in and shampoo it out after 10 minutes. Follow the instructions in the enclosed leaflet.

How long is the colour said to last?

The listing claims up to six weeks, but it also classifies the product as temporary. These details are inconsistent, and customer feedback on longevity is mixed.

What shade is this product?

The product is listed as dark brown, model UK ULTRA A45.

What safety steps are specified?

The listing advises reading and following the instructions and conducting a skin allergy test 48 hours before every use. It warns against use on eyelashes or eyebrows and advises avoiding use in several situations, including a previous reaction to hair colour.