Blue lip gloss...I've heard it will impart the illusion of whiter teeth and doesn't look blue on your lips. Benefit makes California Kissin', a minty blue gloss. In the picture above is Cover Girl Amazemint in Happy Hour, a minty blue gloss. The difference as far as I can see is price. I haven't tried the Benefit gloss but I now own the Cover Girl blue gloss (yay!) and I really like it. I can tell there is a slight blue sheen to it but it is clear on my lips and has the most delightful minty tingle and scent. I almost think it really does make my teeth look a little whiter. For around $5 it is definitely worth every penny!