There was a time when a deep, bronzed tan was considered the ultimate sign of a great summer. Bottles of baby oil came out, reflective panels were propped up toward the sun, and sunburn was treated as little more than an inconvenient pitstop on the road to glowing skin. What sun-lovers did not know then…
A nine-week study tracking 11 volunteers found that deodorant, moisturizer, and foot powder alter the skin's chemistry and bacterial ecosystem in ways that persist for weeks after use stops.
Most people think of their skincare routine as a daily ritual with daily consequences. Apply something in the morning, wash it off at night, start over.…

