Folliculitis. How would it vanish? I am concerned it would affect hair growth. (Photo)

Only time will tell.  It is relatively normal to have a few "bumps" or folliculitis.  The important thing is you had it treated.

Folliculitis in the grafted area is often mis-understood.  Actual infections in hair transplant surgery is very uncommon because of high scalp vascularity.  Prolonged redness (and itching) of the recipient area is common, because of the inflammatory process present (and needed) for graft survival.  Most of the time this redness will subside over the course of the first or second post-op month.  However, if the are begins producing discharge, feels warm to the touch, or if there are any systemic signs of infection such as fever and chills, prompt treatment is usually needed.

I think you just need to wait longer, and the skin should return to its normal state. It almost definitely will not impact your final results. You are still fairly early in the whole process, there's a lot of time for everything to continue on as normal. Despite this 'bump' in the road.