I started shaving my legs when I was around 16 or so and after awhile I stopped because it really was a pain. I started again, but after I do, it becomes insanely itchy! - to the point that I scratch my legs completely raw. I shave my armpits every other day and it never gets that bad. Is this happening because I stopped shaving my legs regularly?
I recommend you stop using whatever products you're using and until allergy and itchiness are not gone, don't shave them at all. It's OK wear long pants! Everytime you bath use extra creamy soap or body wash, let it moisture your into skin. Now when you are ready to shave your legs, use a razor and shaving cream specalized for sensative skin and when you shave, shave along with the hair not against it. Thus you'll avoid cuts that cauze allergy and the hair won't grow as fast.