Take a look a the last 100 years of acne treatments, from dry ice treatments in the 1910s, to UV lights in the 1960s, to K-beauty treatments of the 2010s. Still haven’t subscribed to Allure on YouTube? ►► bit.ly/AllureYouTubeSub ABOUT ALLURE The best daily makeup tips, skin-care advice, hair tutorials, product reviews, and videos from beauty experts. 100 Years of Acne Treatments | Allure