Just finished my 4th laser hair removal treatment with a diode laser. I can't remember if it happened previously (I'm thinking no), but this time I noticed black specks in the areas I had treated (underarms, bikini)--what seems to me to be hairs/hair follicles right at the top of the skin. Is this normal right after the treatment? Just wondering if this is normal/why it happened so fast. I have dark/course hair. Does this mean the treatment worked really well?