Lip liners were a scary lip product for me. There were a few years during the 00's - when I was a child - that women used to line their lips with a dark plummy red and they apply a nude lipstick on the top of it: not the most flattering look.
Since then I always line my lips because it makes them look fuller, it makes everything look neat and tidy with any smudges and it makes your lipstick last so much longer! It's honestly incredible.
Sometime I only line my lips and then apply the lipstick, on those days I just want more defined lips but when I really want my lipstick to last at least a few hours, I apply the lip liner all over my lips and then apply the lipstick on top (I still press my lips on a little bit of tissue and apply some powder, that way I now my lips will be intact for hours).
I am definitely a fan of lip liners now, so if you have any good ones please leave them in the comments bellow and let me know what you think of lip liners in general!