Review (3/5): A bit thin and liquidy
I bought this thinking that it would be nice and thick since it's an amplifier and can supposedly be used under lipstick, but it's kind of watery and thin, so I don't think I could use it under lipstick at all. I've found that it stays on better if I apply it and then tap another coat onto my lips with my finger and spread it out.
Also, the citrus taste/smell tends to sting if your lips are chapped, and I haven't noticed any amplifiying properties about it whatsoever.
It's an OK product, but there are definitely better balms and amplifiers out there and so I know I won't re-purchase this.