India, May 1 -- Rising temperatures coupled with sweat make for a tricky combination for the skin. Breakouts, rashes and acne can all increase as summer gains pace, so it only makes sense to start using lighter products in one's beauty routine. One of these must-haves is a face serum. Explaining why its vital, Dr Nishita Ranka, medical director and founder of her skin clinic, says, "Owing to the intense heat and humidity, you need a skincare regimen that is effective and comfortable."...