TikTok’s latest viral challenge has the world’s teens gluing up their top lips with eyelash adhesive to achieve a poutier look, while parents and health experts look on in dismay. Risking scarring and skin problems, depending on what adhesive is used, it is all worth it for young users eager to gain an online audience.

TikTok is a mobile app that allows users to post short videos of usually 15 seconds, contributing to what is known in the industry as “fast entertainment.” It has an impressive 500 million active monthly users, is available in 155 countries and has teenagers who have downloaded the app spending an average of 52 minutes using it every single day.

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