If you've heard of retinol, but still have no idea what the hell it is, I'm here to help. In your teens and twenties, your skin cells turn over roughly every 28 days, revealing a fresh layer of GAWJUS skin. But into your thirties and beyond, this turnover rate decreases — which can make the skin look dull and increase the appearance of wrinkles.
Enter retinol, which sinks into your skin and helps hasten the cell turnover — making your body churn out younger, smoother skin again. Good for acne-fighting and anti-ageing, this powerhouse ingredient comes in a variety of forms, but I love to use it as a post-cleansing oil with The Ordinary's 2% Granactive Retnoid In Squalane.