Instruct: Classify the given review into positive or negative sentiment.
Query: Fantastic! It Works!

This product has made a huge difference for me! It works, and i'm so happy, i can hardly believe it. The only downside is that you can't put it on (for girls) after you've shaved your arms or taken a shower- you're supposed to wait a bit until your underarms are dry with no irritation. Otherwise, i can now wear what i want with full confidence!!