Hair dye for small area of grey, any suggestions please?

[FelicityFeline]

I have had a few greys for about ten years but have recently discovered they have been breeding, but still only in one little area. I probably have about 40 but my hair is really thick so not too obvious. However, I would like to dye them, but not my whole head. Is there such a thing as a mascara type dye that I can apply? Thank you. Oh and my hair is brown, if that is relevant!

Just picked up a brush thing in M&S beauty dept for this, although not tried it yet….think it was 20% off iirc.

I use cover your gray hair mascara in dark brown. It's less than a fiver, from Amazon.

thanks, will have a look at those