Hi, Thanks for posting your query
I understand your concern regarding itching after shaving.
There is nothing wrong with your skin. This is a very common with people who shave armpits or bikini area. I shall try to explain you
The skin over the arm pits and bikini area is thin and sensitive and hair are thicker and coarser. Due to shaving very close to the skin, the sharp cut edges of the hair (may go under skin once you release skin after a stroke
of razor) irritate the surrounding skin or internal structures in case of under skin hair , which leads to inflamatory process leading to itching and bumps . Once you scratch , this initiates a scratch itch cycle which further increases itching ang aggravates the condition.
So it is best to avoid shaving too close to the skin.
Since you have tried new blades , different creams lotions, I suggest you to go for permanent hair reduction with lasers.
Hope this helps you