}

What Is a "Retinol Sandwich"—and Should You Try It?

Discover This Skincare Technique to Maximize Retinol Benefits and Minimize Irritation Move over toasting, garnishing, and layering, there’s a summer s...

How the Retinol Sandwich Works

Just as how we can appreciate the convenience and simplicity of a sandwich, it doesn’t mean you should slap any old layers together and call it a day ...