Myth #1: If you have oily skin you don't need moisturizer.
I know it sounds counterintuitive, but moisturizers are not just for dry skin. Every skin type--oily, acne-prone, normal, or dry--needs some sort of moisturizer to keep it hydrated, balanced, and nourished. Also, oily skin can be dehydrated (lacking water) just as commonly as dry skin. So if you don't moisturize, your skin will just produce more oil to try and compensate.
Myth #2: If you don't wear makeup, you don't need to wash your face before bed.
I hear this excuse a lot. So here is a little illustration from my personal life: Today I did not wear any makeup. I did put my moisturizer and sunscreen on after my shower, like a good esthetician. I ate three meals, sneezed and blew my noise several times, touched my keyboard and many bathroom doors, itched my nose countless times (4 in the last 2 minutes), touched my face at least 100 times, rubbed my eyes, went outside into the sun and pollution, pet a dog, held my neighbor's baby (who also touched my face), drove and put gas in my car, and so on. Even though I washed my hands numerous times, it's pretty clear that my face is anything but clean. And now I'm going to get into bed and rub all of this into my drool-soaked pillow for the next 8 hours. Sleep is the time for your skin to rest and rejuvenate, and it can't heal if it's busy fighting off the effects of the day.
Myth #3: Anything marked "natural" or "chemical free" is best.
I have been an esthetician for 15 years. And more often than not, when I see someone on my table complaining of acne, redness, and inflammation they're buying their skin care from Whole Foods. In their minds, "natural" is better. But the truth is that organic skin care just doesn't deliver results. In fact, a lot of these "natural" ingredients can cause inflammation and allergic reactions if not formulated with lab-derived delivery systems. Read more on this topic in my previous blog: http://ritual-spa.com/the-truth-about-organic-skin-care/