Moreover, your top lip might tend to get even thinner when you smile.
If this sounds familiar, practically any lip color can be used for added depth and dimension.
Still, there are a few shades in particular that will truly give you a va-va-voom pout!

Bonus points for shimmery and frosty formulas, which will give your lips an immediate bee-stung effect.
As per More, tool is all about creating more curves, particularly in your top lip.
Grab a color-matched lip liner and line your entire mouth, exaggerating an m-shaped bow at the top.

Another inventive, expert-backed tip for more voluptuous lips is the ombre lip effect.
The perfect trick for faking some depth, anombre effectuses light and shadows to make lips look fuller.
you could achieve this effect with either lip liner or lipstick, and works similarly to the center-gloss trick.
Whatever you decide to do, there are tons of options for giving flat lips seriously voluminous appeal!