Rosemary oil contains terpenes and phenolic components that offer antimicrobial properties for the hair and skin. For the hair, it helps reduce the growth of certain yeasts which give an anti-dandruff effect. It prevents hair loss by enhancing blood flow to small blood vessels in the scalp, increasing the production of hormone-like lipids involved in hair follicle growth. Rosemary oil is used to prevent premature graying. For the skin, rosemary oil can help soothe the redness of the skin in eczema and rosacea. It fights acne bacteria from getting into your pores. It also tightens skin tone as it helps shrink pores. Rosemary oil helps prevent many types of premature signs of aging. Rosemary oil deodorizes naturally as it prevents skin bacteria. Rosemary oil has diuretic properties, meaning it helps drive fluid out of tissues where it’s applied. For the eyes, this can help with the appearance of under-eye bags that look swollen and puffy by getting rid of fluid retention and easing congestion. For the treatment of cellulite, rosemary oil has a toning effect for the skin helping reduce the appearance of cellulite.