I have been using this for about 4 years after I had a sudden very bad allergic reaction to a permanent Hair colourant. I chose it because it uses no ammonia or hydrogen peroxide or parabens. I find it very good. I always wash my hair first and let it dry. Then apply the colourant quite thickly and don't use any heat but leave it on for up to 2.5 hours. When I come to rinse it out, as soon as the water is more or less clear, I towel dry my hair, Comb gently out while hair is wet and leave to dry naturally. The longer the dye is in contact with my hair the deeper the colour. I find that after one application the colour lasts for about 3.5 weeks or sometimes longer. Although I have long hair, I find one little bottle will do me for 3 or 4 applications. The bottle has to be squeezed hard to get the dye out which is tiring on the fingers as the plastic is very thick. That's my only complaint. I wash my hair once a week and then I use a conditioner.

Got 2 bottles of blk/blue. Although I've had to reaction this was a total waste of time. Colour does not take to hair and washes straight out after application. Hair looks exactly as it was before dye was put on. Does NOT cover any grey. Please don't waste ur money buying this product.

The product is totally waste of money. I used Blue Black 430. It did not cover my grey hair at all. Infect my grey hair turned to light sky blue colour. I specifically call customer help line to ask that is blue colour is going to give big effect or black, so he said no blue colour is just give a shine. Absolutely this is not for cover grey hair.

I found this product by accident when searching for a dye to cover my grey ,as lam allergic to normal dyes ,l used medium brown as my hair us normally brown ,l must admit after using a full bottle and must of the grey only coloured to a lighting grey with a orange tint l felt like crying thinking another one failed,so l decided to do it again the next day ,wow l used about 3 quarters of a bottle and OMG my hair came out a beautiful shiny brown, all grey totally covered ,my hair feels so soft and what a shine ,l nearly cryed after trying so many natural dyes and none covering my grey,l will Defo be using again and again l love it ,so if 1 bottle does not work try another straight away ,and no l dont work for the makers of this product ,lam just someone who was desperate to find a dye tgat does what it says .thankyou so much so happy

I'm a 48 year old woman and, have an allergy to most hair dyes!!..I've had trouble accepting my greys over the past few years or so & this really got me down. I discovered this product whilst doing the usual googling. I'm so pleased with the results. It has covered all the greys and left my hair feel healthy too. I will be definitely buying again!! LEAVE ON FOR 45 MINUTES AND USE HEAT TO GET BEST RESULTS!!

After reading the reviews and disregarding the negative ones thought I would try it for myself. Was looking for a "natural" colourant and getting desperate. Well, I followed the instructions and even took a hairdryer to the colour when on my head for 10 minutes (as a previousreviewer had suggested). I then wrapped my hair in the plastic hood and coverd it with a towel (to keep the heat in) and randomly blasted the hairdryer over it trying to keep warmth on the colour. My efforts were completely wasted, my hair doesn't even feel nice afterwards (no conditioner included in the box). I would never recommend this. And so far have not come across a ppd free semi-permanent colour that actually works. So my search goes on....

This product is totally waste of money and would not recommend to anyone. It did not cover a single grey hair. Having thick/heavy long hair, it took me 50 mins to apply + waited 40 mins before I washed my hair. applying to my hair.

This product did not work. I tried 3 different shades too. Not only did it not cover any grey hair, it didn't colour my hair at all! Waste of money. Will never recommend.

After dying my hair for 20yrs the last 3 times I coloured I got a reaction getting worse each time to which my gp told me if I did it again id end up in hospital as my neck swelled the 3rd time which affected my breathing, so at the age of 42 and getting married this year I didnt want to be grey just yet. I did lots of research on the internet and found grey busters so I ordered a bottle, being scared I made sure I did the 48 hr tests had no reaction so went ahead, I left colour on for 45 minutes with the plastic hood on to give heat, I felt no tingling or discomfort. Washed the colour off and it worked the grey had gone and the colour was lovely and looked so healthy. I do it every 4 weeks but its great as u can use the same bottle theres no waste with this colour. Id say its an excellent buy.

Found this product after a long search for a non allergenic dye suitable for beards. I have tried lots of products that cause skin irritation and rash and can honestly say that this is the best I've come across . It smells fine and doesn't stain the skin - You will need to be applied every few days but its better than using harsh chemicals on a beard that will need trimming anyway. You'll have to cover with the plastic bag but this will be easy to manage and doesn't require great ingenuity to tie it in place - just remember not to cover the nostrils -lol !! and you should survive the ordeal and look much better when it all done !!!! Highly recommended !!

I purchased the Blue Black shade to cover my grey roots and replenish slightly faded black permanent hair dye. There is no difference at all to my hair colour - my greys are still 100% grey with no hint of colour to them and the faded black is still very faded. The hair dye has a weird chemical smell which has lingered on my hair and my hair feels slightly dryer than it did before I used the dye. I followed the instructions to the letter - washed my hair with a clarifying shampoo, no conditioner the night before and left the dye on dry hair for 40 minutes which is the maximum time stated. It was a waste of time and money. So, if you want to cover grey hair without bleach, don't waste your money on Nature's Grey Busters because it doesn't do what it says on the box!

I suffer from allergies of various triggers, hair dye being amongst them. I've been using Natures Grey Busters for approx. 7 years with no problems. Don't expect the coverage of a chemical dye and you won't be disappointed. I like to mix colours to give a shade I like, usually mahogany and medium brown it gives a lovely reddish brown and looks natural. My hair condition afterwards is wonderful and I find I don't need to wash my hair for at least 3 days. I get a couple of applications as my hair is short. Only downside is that you have to order it online, I remember when they stocked this in Morrisons! Oh,and the cost.,but saying that it's a small price to pay to keep looking younger!

I was delighted when I found this product as I am allergic to hair dyes. I followed the instructions exactly and although my hair became slightly darker, the few greys I have were not covered at all. The next couple of times I left the product on my hair for double the amount of time. It still made no difference to the grey hairs. A complete waste of money!

This product is amazing, it really works! But it does need a lot of heat. I applied the dark brown, and covered my hair with the plastic cap. I have a hood dryer at home, and I sat under the hood for an hour with the dye on my hair, with the heat setting on low. When I first rinsed my hair out, I could see that my grey hairs were covered, but not as dark as my natural hair. Then, I put my hair in curlers to dry it, and sat under the dyer again for an hour. When my hair was dry and I took out my curlers, I could see that the colour had fully developed, and covered my grey 100%. Heat is the key!

I used this product several times. i had no reaction to it despite severe dermotitis, which is good. but each time the colour just washed out, no coverage of grey at all. i wrote to the manufacturer, and they suggested a darker product and more time (c45mins), but the same happened. It seems then that for some hair types it doesnt work.

I have used this dye four times now. I'm about 30-40% grey, and have sensitive skin (eczema and allergies). I had no problem with this. The first time I used it, some greys where still visible after, but the second time I left it on a little longer and it covered them well. The colours are good with a cool-ish tone. I have used med/light/dark brown and not mahogany as they recommend against this on grey hair. If your not expecting a salon result you wont be dissapointed. I'm going to try mixing med and dark brown next time to give it a bit more ooomph.