To find new ways to shield hair from heat, sunlight and air pollution, researchers in Brazil are turning to vegan-friendly ingredients for shampoos and conditioners. Published in ACS Omega, early tests show that a fruit-algae combination added to haircare products coats strands with a protective film. Although the botanical film makes hair slightly less elastic, it improves shine and makes locks easier to comb compared to hair washed and conditioned with products not containing the biopolymer.