Although skin is very tricky, there are some simple but very important concepts that can be understood before buying skincare products. Remember that your skin is an advanced body working 24 hours daily for your entire life to maintain itself in the perfect state possible. While it seems like to work against ones (cosmetic) desires when the application creates rashes, acne, hyperpigmentation, inflammation or whatever, it is actually, in fact, doing its best that you're performing at optimal leve