Step 10: End Your Morning Routine With A Sunscreen – Yes, Even Indoors Sunscreen in-and-of itself isn't groundbreaking, but the Korean beauty industry is known to have a more rigorous vetting process when it comes to protecting your skin from damageing sun rays. In comparison to the SPF sunscreen rating in the U.S., Korean beauty uses a PPD and PA rating system which measures the amount of UVA radiation one can be exposed to without tanning. For me, having zero white cast is my biggest concern in choosing a sunscreen, and I'm glad to report the Rootree Mobitherapy UV Sun Shield ($23) hits the mark. Image Source: peachandlily.com Rootree Mobitherapy UV Sun Shield $23 from peachandlily.com Buy Now