Abstract Due to adverse effects of free radicals on human skin and increasing consumer demand for natural ingredients, essential oils from basil, Ceylon cinnamon bark, clove, juniper, lavender, oregano, rosemary, tea tree, thyme, ylang-ylang were assessed their antiradical activity. The evaluated in the concentration range 5—0.1 mg·mL −1 , which three reference synthetic antioxidants are most o...