"Don't cross your eyes, they'll get stuck like that!" "Don't go outside with a wet head, you'll get a cold." "Sleep on your back to prevent the formation of wrinkles." Or, "If you don't take your makeup off before you go to sleep at night, you'll get more wrinkles." What you'll get is a dirty pillowcase!
Science based medicine evaluates medical treatments and advice in a scientific light, promoting the highest standards in healthcare. The gold-standard for a scientific study is the Randomized Double-Blinded Placebo Control ( RDBPC) study which, by design, minimizes biases, and has the ability to demonstrate the cause and effect relationship. Unfortunately, these studies can be expensive and time consuming.
All too often, skincare "experts" give advice based on assumption and personal experience. Human "intuition" and personal experience are awful ways to figure out which treatments are actually effective. (read more)
Scientific studies, even RDBPC studies, are not perfect, but experimental studies are, by far, the best way to find out if a particular medicine, ingredient, or therapy is safe and effective. It's the basis of almost every major medical advance in history!
When you come across skincare advice, question whether the advice is based on scientific studies or someone's "intuition." Conjucture in medicine is dangerous. It is "ok" to "not be sure" or to conclude "further studies need to be done." But snake-oil exists. Don't buy any!