Ceylon cinnamon and clove essential oils as promising free radical scavengers for skin care products

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 often added mass-produced cosmetics. Among all examined samples, C. oil at a 5 showed strongest DPPH radical scavenging activity (0.41 IC50), followed by clove oil, BHA, α-tocopherol, BHT (0.82, 0.84, 0.88 0.93 respectively. At same concentration, reduction power was higher (1.64 Trolox Eq.) than that α-tocopherol (1.42 0.80 mmol·L Eq., respectively) but lower BHA (1.81 mmol·L–1 Eq.). Antiradical other eight low or negligible. promising agents care according our GC-MS analysis, these contain 0.29 % cinnamaldehyde, 0.03 linalool, 0.02 D-limonene, eugenol 0.41 0.002 respectively, monitored contact allergens Such product is not be suitable consumers allergic substances vast majority it does pose risk terms manifestations.