Did not color for several months, lots of
gray hair starting to come back in...even little short ones...then Salon colored again ....I recently had a stronger reation, rash on forhead and itching like crazy, scalp tightness, hair fall again...
I think you can have an allergic reaction from hair color which leads to delayed hair fall ..at the scalp... I am not a doctor, but this has been my experience...
through research it looks as though it might be the PPD in hair color...