This product may be effective on a younger person. ... [SEP] This product may be effective on a younger person. It has not caused my eyelashes to grow any longer after two months. I apply it at night on a clean face. It will burn if you get it in your eye, so follow their application tips well. My lashes do feel silky, but not noticeably longer. It is a colorless clear liquid and is applied with the provided brush applicator. I will continue to use it until it is used up and will review again if there is any change.