Black-and-white illustrations in old medical textbooks have a very distinct style. The smooth shading effects show as much of the texture of a tissue as you need to see to be able to understand ...

Depending on your skin type, your derm might even suggest laser treatments to help remove discoloration and smooth uneven texture. "For a deeper treatment, fractional laser resurfacing, ...

Credit: David Cheney (illustration) and Jen Christiansen (charts); Source: “Insights into the Multiscale Lubrication Mechanism of Edible Phase Change Materials,” by Siavash Soltanahmadi ...