Make some black tea and let it cool down till it's lukewarm, then soak your hair in it for around 15 minutes and afterwards take a shower and wash it out. Do this once a day for around 2 weeks and your hair will gradually get darker. 2 weeks is just an approximate guess, it really just depends on how dark you want your hair to get.
This is the easiest method as all you need to do is replace your regular shampoo and conditioner with the John Frieda Brilliant Brunette shampoo and conditioner (the darker the shade the better). Just use them like you would use your regular shampoo and conditioner and rinse your hair after applying each one thoroughly. After 1-2 weeks you should see a change in your hair colour.
Make a cup of coffee (make it as dark as possible) and let it cool down. Rinse your hair at least 3 times with the coffee in the shower. You can still wash your hair as normal after doing this, like the black tea method your hair will gradually get darker each time you use this method. Just be aware that there will be that scent of coffee lurking around... however this is still a good method and don't let that put you off! It's better to put up with that than damaging your hair!
If you have any other fashion/beauty related post requests, just leave them down below and I'll try my best to get one done.
What colour is your hair?