Sunsilk is a hair care brand produced by Unilever that is considered the world's leading hair conditioning brand and second largest shampoo brand. Sunsilk sells shampoos, conditioners, and other hair products in 69 countries worldwide and is the number one hair care brand in several Asian and Latin American countries. Sunsilk has launched various products since 1954 and uses celebrity brand ambassadors to promote its products, though some ingredients may cause allergic reactions or hair damage for some users.