Like it's another organ of the body, it's equally important to take care of your skin too for its proper functioning. If not taken care of, it can easily show the signs of aging quite early.
Many people have a combination skin type, while the rest of the body has a dry skin type.
The best skincare tips I have are:
Protect it from the sun. Wear proper sunblocks, and reapply every 2 hours if you are in the sun. I do SPF 40+ and recommend the same to my patients.
Don't equate the cost of a product to its effectiveness. There are a LOT of products being hawked on Instagram (by people paid/compensated for selling them) and on this site as well. You don't need to spend a lot to get a lot. Don't assume that the $100 facial wash is better than the $10 Cetaphil just because someone says so.
Experiment for yourself. Try the cheap stuff first, and find a flavor that works for you. If it is an expensive/exotic one, then your pocket will hurt, but your skin will at least know it needs that product and not one of its cheaper cousins.
Everyone's skin is different, so don't subscribe to a friend's regimen, especially if it's expensive.
Know that the skincare brands that are being marketed to oblivion all make compromises. They keep the strengths of their products low so that they are considered "over the counter" and do not require a prescription. This saves them a lot of money and enables them to market to the masses. They have high marketing needs, and their products pay for them. It is almost always cheaper in the long run to see a qualified doctor, get a reasonable opinion, and fill prescriptions to get your skincare done with stronger.
As a professional that sees many people that have been sold Rodan and Fields by all of their friends, as well as expensive products at the mall and other outlets, you are better off, in the long run, getting a stronger product that works. My patients come to me after trying a bunch of stuff that is "over the counter strength" and never saw results until trying the full strength products.
Natural products are ok, but make sure that they are better than medical-grade skincare products. I see all products only as "products" despite their origin, and they have to be better than their competitors to have a place on my shelf. I encourage you to do the same. Don't be fooled into thinking "herbal" and "natural" mean "safe." To me, thorough testing and a long track record of safety, and a manufacturing process that gives consistent products are more valued than the label of being "natural."
Use a vitamin A derivative. This means retinol (if you're talking about over the counter products) or tretinoin (Retin-A) if you're talking about prescription products. If there is a single "fountain of youth" product that every Dermatologist can agree on, it is this one.
Be very wary of people trying to sell you things. A LOT of information on the internet, including on this web site, and especially on social media, is marketing disguised as educational material. Recognize this, and also recognize that the truth is usually not sexy. Aspirin is one of the most effective medications available, and it is over the counter, cheap, and does not get nearly as much attention as the expensive, exotic products that companies make a much larger profit from. Skincare is the same.