A routine that consists of vitamin C, sunscreen and a moisturizer with hyaluronic acid. Anything more than that is most probably overkill unless your skin is REALLY shit. Also exercising and a healthy diet helps considerably.
Tretinoin 0.05% for reversing wrinkles rather than preventing, though it's going to make your skin a bit photosensitive so wear a strong sunscreen. If it's too much for you there's also tret 0.025% available.
Collagen is a bit of a meme though ingesting it is going to at least make sure your reserves are full, but it won't do you any miracles unlike tret.>>18065
Going vampire mode is your best bet indeed. Wear sunscreen and/or don't go out between 10 and 7. Take vit D supplements and/or mushrooms that were exposed to sunlight.