Explore Capsules

Itch is stranger than it seems, and its causes are debated. These explanations range from the skin's ecosystem of nerves and bacteria to the brain's dedicated itch circuits, how itching spreads socially like a contagion, and how scientists design experiments to trigger it. You can weigh what might finally break the itch-scratch cycle.

Retinol and niacinamide can transform skin or wreck it, and the difference is how they are used. Against the belief that off-the-shelf products alone suffice, the case here is for dermatologist-guided routines: right concentrations, gradual introduction, and strict sun protection. Treated as a science instead of guesswork, the same ingredients repair your skin barrier rather than inflame it.