Extraction Mesmara rosemary essential oil is extracted by the process of steam distillation from rosmarinus officinalis. Benefits of Mesmara rosemary essential oil regular use of rosemary oil helps to stimulate follicles making hair grow longer and stronger also slows down premature hair loss and greying of the hair. Nourishes the scalp and controls dandruff fades stretch marks multi-purpose cleaning spray - rosemary oil is an amazing oil to have on hand for kitchen countertop cleaning mosquito repellent caution for external use only keep out of reach of children. Avoid contact with eyes. Avoid use with sensitive or damaged skin. Do not use undiluted on skin. Discontinue use if skin irritation occurs. Do not drop oils directly in ear canal or eyes. Oils can dissolve plastics - use in glass. Do a 2-days patch test for even the gentlest essential oils before using them generally.