Doing this with AE's built in tools can be difficult. It wold really help if we could see a few seconds of the video. The easiest way to apply digital makeup in AE is with this plug-in: Beauty Box Video Plugin : Skin Retouching for After Effects, Premiere Pro, Final Cut Pro, Avid, & Resolve for HD and 4K …
It costs about $200.
You can look for Digital Makeup After Effects to check out some tutorials.
If you have a bit of experience you could use Mocha and some AE tricks to fix things on the face. Here's the demo from a trusted source. Beware of You-tube tutorials from amateurs that often point you down dead end alleys and seldom give you good workflows and understanding.
Thank you Rick for your input. I really do appreciate it. I'll try their demo and see how it goes. Have you heard of Sheffield Softworks as an alternative?
Thank you for pointing me in the right direction Rick!