New Delhi, Feb. 17 -- Hair extensions have become a go-to beauty upgrade for many Indian women-promising instant length, volume and style flexibility. But emerging scientific findings are now prompting doctors and consumers alike to pause and take a closer look at what these products may contain, and what long-term use could mean for health.

Recent independent laboratory analyses of some commercially available hair extensions have detected a wide range of chemical compounds, particularly in synthetic or heavily treated products. Among those identified are phthalates, flame retardants, organotin compounds and volatile organic compounds (VOCs). Several of these substances are already recognised globally as potential endocrine disruptors or...