The one product I use when I’m too tired to do my whole skin care routine In a perfect world, I would do my skin care routine in the AM and PM every day. But some days I’m just too tired.

A cleanser, a vitamin C serum, a sunscreen, a retinoid, and a moisturizer are five must-use products, per dermatologists. A skin-care routine surpassing 20 minutes can feel indulgent, but experts ...