How do you take away a mosquito bite?

What I do is i put some lotion on it, and then dont itch it! haha, but if you need too, then I would scratch in (like rub it) on the couch or something. I hope this kinda helps. . . Also ask your parents, they will tell you some stuff to do. (:
Rub one drop of ammonia into your skin where the bite is. Follow this with a drop of cortisone ointment rubbed in well. In less than an hour, you won't even be able to find where the bite was, much less feel it.
first things first,NEVER scratch it.yes,it's tempting,and yet very itchy.It's okay to lightly scratch but it will only get worse,no you won't die or get any serious injuries but you don't wanna end up with many scars like me.
When you got bitten by a mosquito, gently wash the bite area with water and soap, pat it dry instead of rubbing, keep it clean, (the almost impossible one) try NOT to scratch!

Then simply run hot water, as warm as you can stand, over the bite area for a few seconds, or use a hot washcloth. This will relieve the itching for many hours. The water should be quite hot (about 120 degrees F/ 48.8 degrees C, be careful not to scald the skin)

Gently rub some ivory soap over the bites to further take away the itch

Now ice the bites with ice cubes, an ice pack or even a can of cold soda (if you're outdoors) to keep the swelling down

There are many ways to treat mosquito bites, you just have to find the one that works for you
you can apply some oil or cream!