Im too scared to try cosmetic products, what I do is make my own mask. Honey lemon is great for skin. I also use egg milk mask. All these are natural and homemade. I love using Masks. Im from a tropical country, can you recommend a good moisturizer? 
Btw, I used to buy Etude products, they're good. Tea milk mask is great, but last time I went there they don't have it anymore. Planning to try Ohui products soon.
I use Cosmetic Love to order Korean beauty products and I live in the UK. It's reliable and the shipping is free. They often have discounts too! If you want, you can use my referral and it gives you 15% off your first purchase! http://r.sloyalty.com/r/uFwcVfQ5ergA. If not, just google cosmetic love and it should come up! 
My favourite korean beauty brands is Etude house we have it in so many places in Japan now,its very very cute and pink and I have so many products of etude house!
Also I like innisfree skincare :D