Garnier Olia Permanent Hair Dye, No Ammonia, Full Grey Coverage, Long-lasting Colour & Shine, Vegan Formula, Colour: 7.40 Intense Copper, 230g

Really easy to use, doesn't drip & doesn't have the horrible ammonia smell. Covers greys really well (they will always be a slightly different colour to the rest on dark hair!) and doesn't fade as much as others. It does give a lovely, shiny, natural looking colour.It does go on a little darker than I expect, however, it lightens after a couple of washes.I have really long, fine hair & 1 box is more than enough for me.Only thing I don't like is the conditioner - it works OK & smells lovely, but I don't think it conditions any where near as well as my usual one, and then I end up with a tube I don't want - would be nice to have the option to not have it

It did its purpose. It covered most of the grey hair within 30minutes. It gave the natural dark brown color. The dye was pleasantly odorless, with no harsh ammonia scent

Very pleased, love the colour

I like the product, it was easy to apply. I'm out of practice with hair dyes, having not used a home kit for quite a while, so I was quite impressed that I didn't drip dye everywhere when I applied it. Also, it was fabulous not to have the eye watering ammonia on my head for half an hour. Plus, there was very little skin staining (although I did apply Vaseline to the hot spots on my ears and forehead/hairline.Less positive was that I wasn't aware that I would need two boxes for my mid length and average thickness hair on the first application The results were really patchy along the lengths of my hair with some areas where I'd clearly not applied enough. I had to buy a second box and reapply it. I'd like to think that now I have the "base colour", I wouldn't need to top up my colour with two packs in future, but I don't know about that one until I try it.Also, the resultant colour is a very reddish shade of purple and really quite dark on my mid brown hair. It's taken the shade of my hair to a much darker brown and the purple is not overly noticeable without having full light on it. It kind of just looks a very, very dark brown in dark lighting. I think I expected something a little more vivid on my hair based on the box images. It's a nice colour, don't get me wrong, but it's not very close to expectations and darker than I wanted.I might or might not choose this shade again, but I think the product itself is very good. I really don't know why manufacturers can't make our lives easier and produce a larger product size for first time applications or longer, thicker hair, instead of us needing to buy two boxes to get the results!Anyway, I've bought a different brand with a different purple to try once this colour fades; I don't doubt I'll be less impressed with the ammonia though!

Very good quality colour which provides adequate cover and a lovely tone. I do find the colour darker than expected but that may be down to the quality of my hair and I am sure over time this will fade down. I have shoulder length hair and had to buy two boxes for sufficient coverage but this provided an even more coated application. Highly recommend this product and will buy again in the future

I wanted to write some of the pros and cons of this product so it helps others make an informed decision:Pros• It lifts darkest brown hair quite well given it doesn’t use bleach. I was impressed that my darkest brown hair was ever so slightly lighter and without a hue of red.• I had a balayage treatment done which, because of lockdown, I haven’t been able to tone. I applied this dye over the reddish/brassy highlights and it muted the tone fairly well. I wouldn’t say it removes the reddish/brassy tone entirely but it definitely mutes it and make it more of a golden brown which is a much more appealing colour.Cons• I found the substance quite difficult to apply and my hair would get easily tangled. I would advise using a comb when applying to ensure even application. Don’t massage it as per the instructions as hair gets tangled and actually I was worried about damaging my hair or having uneven coverage. Comb is gently through and take your time.• This notes 100% grey coverage but that’s not true at all. I would say 50% of greys were covered. I left the product on for 30 minutes and was wary to leave it on longer in case my hair got damaged. It would either need another dye session or to be left on longer.OverallOverall this is good value for money. And for a box dye it helped me feel a bit more “normal” given I don’t have a hair dresser. The main flaw is the grey coverage which was the main reason I bought this product. I would probably buy it again as my hair feels soft (not damaged at all) and maybe one more round could have 100% results. But I’ll wait a couple weeks before doing so.

I ordered the B+++ maximum bleach as it has no ammonia and I've previously had reactions / anaphylaxis after using another brand eith ammonia. This lifted my hair from dark brown to platinum blonde much better than the brand I used to use, no harsh smell, no reactions, hair still feels healthy. Highly recommend!

My wife was very pleased with Olia hair dye as she has been using it for years always resulting in a natural look and no damage to her hair, she says it's easy to apply and no complicated instructions so as you see she's one happy lady which makes a happy husband.