Remember having acne? Back then, dermatologists prescribed powerful topical Vitamin A medicines in the retinol family. It wasn’t an easy regimen, with weeks of build-up to regular use plus skin irritations, but the stuff more than tackled our acne. Long term, it actually even made our skin smoother and clearer. How? Years of studies confirmed that, beyond treating acne, retinols also increased collagen, tweaked the blood vessels and speeded new skin cell growth, all ways that