Alright. I just bought this lipstain the other day, and so far I've only worn it once. But I am already IN LOVE with this product.
I bought the Revlon Just Bitten Lipstain + Balm in the colour flame. The tube looks like it's going to be a bright orangey-red, but on the lips it comes out a lot more pink, which is a-ok with me. I actually love the colour that it makes my lips! On one end is your typical lipstain marker-like applicator, which makes application super easy. On the other end is a balm, which is nice because lipstains tend to dry out the lips quite a lot. If you use the balm, it definitely helps to keep this from happening.
As far as staying-power goes, I am seriously blown away by how long this lasts on the lips. I wore this all day and it literally did not budge. I ate, I drank, I talked a whole bunch, and my lips were still pink hours later. I've tried a lot of lipstains, but none of them have ever stayed on this well. Seriously, seriously impressed. If you're looking for colour that stays put, I definitely recommend this product! I know that I'm going to be going out and buying a whole bunch more colours. :)