Question:

I am a woman with hair on my two hands and some on my face, and I am unable to remove all of it; so I colour it with a colour that is of the same colour of (my) skin; is this impermissible?

Answer:

There is no harm in this. It is neither impermissible nor something (one) is withheld from. The likes of these affairs do not cause (something blameworthy). It is permissible regardless whether you colour it with what matches the colour of skin. 

[Al-Fataawaa Wad-duroos Fil-Masjidil Haraam of shaikh Abdullaah bin Muhammad Bin Humaid: page: 159-160]