Juicier lips don't have to be painful and labor-intensive. I've seen too many Youtube videos where the process takes forever and requires painful steps to give a simple illusion of fuller, plumper lips.
This process, taken from Cosmopolitan, involves only the added application of concealer to your normal lip color regimen.
1. Apply lipstick as normal.
2. Fill middle section of top and bottom lips with concealer.
3. Blend in concealer with your finger.
4. Finish with a nude lip gloss.