India, Dec. 3 -- A video from the beauty and skincare page Skin Ritual is challenging the widely accepted two-hour sunscreen reapplication rule, asserting that the product's effectiveness is governed by actual ultraviolet (UV) light exposure rather than the mere passage of time. Also read | Most people use sunscreen wrong. Are you one of them? Ladakh to Delhi, here are skincare tips for different altitudes

In a November 25 Instagram video, Skin Ritual explained that the standard two-hour countdown only starts when the skin is actively exposed to the sun. The time limit exists because UV rays chemically break down the sunscreen's protective barrier over approximately two hours of use. According to Skin Ritual, remaining indoors largely pa...