If you have sensitive skin I recommend avoiding the product all together. I had a horrible allergic reaction to something in it and after extensive research, discovered the compound was initially intended to be used as a cancer treatment - but flopped in studies. Lots of dermatologist and aestheticians have written articles warning consumers that every part of the Oleander plant is toxic. How this "works" is it causes chronic low-level inflammation in the skin which results in swelling, as long as the product is being used. The swelling is the source of the results you see - swelling fills in fine lines. However, chronic-inflammation over an extended period of time can cause major, irreparable damage.