I’ve used these face razors since 2013! My most repurchased Amazon product. I only use them once and then toss to avoid any breakout issues. I also usually avoid my forehead and upper lip because I don’t have a lot of hair there and my forehead usually gets sensitive from it. But I love to clean up below my eyebrow and the peach fuzz on my cheeks with these! I don’t use any active skincare ingredients on the night I do this and just use gentle/ hydrating products to avoid irritation on my sensitive skin.