As I am getting older one of the annoying things for me is my scalp isn't really happy with regular permanent hair dying and seems much more difficult, it easily irritated and drys so easily.
For me with a short style I can easily hide the regrowth and this is where a re-touch product becomes my best friend.
This spray one comes in a aqua spray can, says up to 25 applications and comes in around 9 shades (thats from The Warehouse site) it is easy to choose a shade. Keep in mind IMO these products are used a a quick fix, something to tide over till next colouring. I would imagine for some 9 shades isn't enough but I am also lucky to have dark brown hair so a exact match isn't that necessary.
I found using it after styling was best for me, I only used a little for the front and the back. Not a difficult thing to do but I found it to be not as precise as say using a hair regrowth mascara wand (which Loreal also do).
I did find it a little drying but that not unexpected (pretty much everything is drying for me). The winning point is at the moment trying not to dye my hair, it can be rough for my scalp and this product really give me the security that regrowth isn't going to be as visible.
Choosing between the spray or mascara like wand, the wand is my first. This is because I have such a little area to cover and found this spray would be more ideal for a over all application ie: part down middle of head vs just a little area for me. The mascara wand offers quicker and more precise application. I wouldn't want to use the spray anywhere near my eyes, needing to hold it 10cm away from head makes it fan out. I didn't apply it without a towel over my shoulders, not quite ready to test on any clothes (it did recommend not to spray near any delicate fabric or surfaces).
All in all the price, innovation and ease to use get top marks for me. Its a easy product to use. Without a doubt one of those products that need to be in the cupboard.
I feel & understand that it's a quick cover up product and not to expect too much from it, with that in mind it won't be too disappointing.
I found the colour a good match, dark brown, easy to use, lasts till next wash so that was great, blended really well with natural colour, what I didn't like is it made my hair go frizzy on top where I sprayed so had to use more oil product to stop if frizz.
Tips: Worth a try