one of two things is happenning. Either you are having an allergic reaction, OR your hair is starting to grow like a weed. I experienced and still is experiencing the same thing with MTG, Surge, and WGHO. and of course vitamins. I can't even touch manipulate my hair right now because the new growth is crazy. Sometimes I can literally feel the hair pushing through the pores and it's a dull itchy feeling. I PERSONALLY LOVE IT BECAUSE I KNOW IT'S WORKING.