In Vitro and Randomized, Double‐Blind, Placebo‐Controlled Trial to Determine the Efficacy and Safety of Nine Antiacne Medicinal Plants

Figure 2

Antibacterial effects of the plant extracts. The inhibition zones’ diameters were measured to evaluate the antimicrobial activities of the plant extracts against Cutibacterium acnes, compared with common antiacne plants (PC). Saponaria officinalis (SO), Inula helenium (IH), Ferula hermonis (FH), Eruca sativa (ES), Urtica dioica (UD), Hypericum triquetrifolium (HT), Nigella sativa (NS), Linum pubescens (LP), and Cappris spinose (CS). The final content of each disc was 5 mg of extract. Values represent means ± SD of three independent experiments carried out in triplicates.