The antioxidant activity of 17 Czech medicinal plants was studied and compared with the antioxidant activity of green tea. The antioxidant activities of water and ethanol extracts of the plants tested were determined by a spectrophotometric method using the stable free radical DPPH (2. 2-diphenyl-1-picrylhydrazyl). and further the contents of the compounds with reducing properties in ... https://www.thegreensjunglebeautyshops.shop/product-category/gua-sha-scalp-comb/