Face products and their use

If you are like us, you’ve heard everyone tell you“It’s important to keep a daily routine for your face.” or “use sunscreen every day” , how about “ use primer before your foundation” ?Nowadays there are a lot of beauty products we "should" be using and new techniques, but what are those products and what do they actually do for us?Don’t do it because they told you to, do it because you know what…