The constant stream of new skincare launches and products going viral on TikTok can make it tempting to switch up your skincare routine at a rapid-fire pace. When it comes to buzzy ingredients, innovative technology or simply a new, luxurious formula, it can be hard to say no to the latest, hottest thing. But is it really necessary — or beneficial to your skin — to be changing your skincare routine so frequently? And how do you incorporate new products into your regimen without causing irritation or breakouts? To help you figure it out, we consulted with board-certified dermatologist Dr. Adriana Lombardi and Dr. Harold Lancer, a board-certified dermatologist and founder of Lancer Skincare. Keep reading to get the lowdown on how often you should switch up your skincare routine, plus how to do it safely.