Or is there no such thing?
I don't want to change the shape or fullness of my lips, just to fill out the lines along the top lip iyswim. Is filler what I need?
Maybe I don't notice when it's done well, but I know a few people who think what they've done is natural looking and it's really not, even if they don't have a full on pout.
Assuming it's possible, how to a find someone to do a really natural look rather than the look that's so popular presently?
I have the same issue with my eyebrows. I just want a light natural tint, and although they can manage not so heavy as what's fashionable round here, they're definitely not natural looking until a week later!