India, April 12 -- cThe rule of applying sunscreen is set in stone. There's no compromise, and seeking any elbow room is a sure shot deal-breaker for your skin's health. So, you faithfully apply sunscreen to protect your skin barrier from the sun's harmful UV rays.ALSO READ: Most people use sunscreen wrong. Are you one of them? Ladakh to Delhi, here are skincare tips for different altitudesBut you still observe signs of tanning, like a prominent darkening of your skin tone, causing a striking mismatch with the skin areas that stay covered. Naturally, it draws concerns. After all, it is a common assumption that sunscreen also protects against tanning. Some sunscreen products literally promise that, on their packaging and even in their ads....