New Delhi: If the promise of clear skin and eternal youth is the bait, then social media is the hook that lures millions to experiment with skincare. Instagram is a gallery of beautifully packaged jars, bottles, and tubes of skincare ‘essentials’ — serums, exfoliators, night creams, day creams, toners, moisturisers, face masks, pore minimisers, cleansers, oils and what not. It may just have mud from the Amazon, minerals from the Himalayas...