Rosemary essential oil is extracted from the twigs of the plant (Rosmarinus officinalis). Its unmistakable fragrance makes this oil immediately recognizable. It is used for draining and relaxing massages. It boasts dermopurifying and astringent properties, which is why it can be added (just one or two drops are enough) to creams, shampoos, or bath foam in cases of impure, oily, or acne-prone skin. When placed in a room diffuser or oil burner, it provides a relaxing sensation, while also enhancing concentration. It is advisable to apply it diluted using a carrier oil, or by mixing a few drops with other formulations.