When I ordered this gel, initially I wasn't sure if it actually does anything to my tiny, aging breasts. But after a short while of using it all my bras have started to feel a little tighter. My cup size used to be between A and B but now it really is B. So far it's only a centimetre or so different but considering the fact it's not the time of the month my breasts get naturally bigger, I'm very happy with the purchase