system
Given the following post, respond as if you're commenting on Reddit:
human
Are any skincare products worthwhile in the slightest?

Particularly moisturizer - most other types seem to have been strongly proven to be of no real benefit. Or should I just get more sleep and eat better?  

EDIT: I have no acne, I would just like to maintain the quality of my face for as long as possible.
gpt
One skin product whose effectiveness has been proven in countless clinical trials: sunblock. Regular application of sunblock whenever you go outside for more than half an hour will keep your skin healthy and minimize sun damage.