Don't stress too much about the scars. You are young enough that they will still fade. I had terrible chickenpox at about the same age as you, with similar scars, and only one or two are still noticeable at all, even though I know where to look. If you have raised scars (keloid scars) a dermatologist can inject a small amount of cortisone which can shrink them, although it may take more than one injection. Keloid scars are sort of "stuck" in their healing process and the cortisone restarts that. I believe there are also fillers for depressed scars. Really, it is worth checking in with a good dermatologist, even for one visit if you are not covered by insurance. You can call and ask what their fee is without insurance, they may reduce it if they know. If you have rosacea, that can be progressive, so you want to take measures now.
I never really used any products or makeup either, but I battled pore problems and red skin for years. So I tell you this now: if you have trouble with pores and reddening skin, do NOT use a "scrubbing" or "deep cleaning" product, despite what instinct and marketing tells you. That can irritate pores, swell skin and make blackheads worse. It will also make your skin worse over the long run. I would not use anything harsher than a washcloth. Eucalyptus is also an irritant and could be contributing to the reddening.
What I do now: I use a product with lactic acid twice a week during the night to open up the pores, and at the end of my morning shower wash with a washcloth with Cetaphil. Any blackheads pretty much disappear naturally after a week or so of this: your pores want to empty themselves and will if you give them a chance. The two most common drugstore lactic acid creams I have seen are Amlactin moisturizing lotion and Walgreens Nature's Finest AlphaHydroxy Skin Treatment 8% AHA. The best part of these two is that they are ridiculously cheap and come in big dorky-looking plastic bottles compared to the L'Oreal type products in tiny jars with 5% AHA or whatever. Don't know what the Walgreen's one is called now that a lot of Walgreens are CVS or Eckerds, but they probably have something similar.
If you don't find them on the shelves -- they tend to be on the very bottom shelves with the other no-name brands and generic vitamin E creams -- ask the pharmacist for a lactic acid
body cream (so they don't try to give you the L'Oreal powdered pearls etc in a jar). They sometimes also stock it behind the pharmacy counter in Target and Walmart even though it's not prescription, because it's used for skin problems where people don't exfoliate properly naturally, that's how I found out about it from a dermatologist. (Lactic acid/AHA is a mild exfoliant. Don't use it every day, and if you really do have rosacea I don't know if it's recommended.) If you can't find lactic, look for products with salicylic acid in the ingredients. A lot of popular acne products have this, and it has a similar effect. If you use too much of either, they can irritate and cause reddening.
I learned a lot about reading ingredients labels from the web site and books by Paula Begoun,
The Cosmetics Cop. She is also about seeing through the marketing and saving money. She does have a line of her own products now which seems to me a little like conflict of interest, but they tend to be much cheaper than the big companies, more like drugstore generics.
Definitely YES on the sunscreen. Oh God, if there was one thing I could go back and tell my younger self that would be it. Sunscreen every day. Don't forget your neck and any chest area that is exposed by your shirt. Also don't wear the AHA products during the day, they make your skin more sensitive to sunlight.
And really, although this may hard to accept at your age and in the youth culture of the US, lines are not a bad thing. Google a few pictures of Georgia O'Keefe. In many cultures, lines are a sign of character, strength, and experience, and it used to be people with wrinkles were admired in our culture too, not the ones with plastic skin and fake beach ball boobs. People that love you will love your lines also. One of my friends told me my eye crinkles were "hot" because they reminded him of strong pioneer women and cowboys squinting into the sun.
Plus, everyone gets them eventually.
Sorry for the dissertation. But I have SO been where you are.
.
