Signature scents are so powerful. There's nothing like being able to identify someone by a few whiffs of a note or two. Just ask Denise Richards. The actress and reality TV star discovered her go-to fragrance over decade ago and hasn't strayed away. And right now, you can grab it on sale during Amazon's Cyber Monday event. Richards told The Strategist in a 2020 interview that she "Sprayed a tester at a beauty counter 15 years ago" and has worn the Kai Eau De Parfum ever since. "I get compliments from men and women, who ask me what I'm wearing.