Hair oils have many benefits such as moisturizing your scalp and hair follicles, making your hair shine and promoting growth. Rosemary oil is a terrific one to start out with and it’s extracted from the rosemarinus officinalis - or rosemary - plant. This a fragrant Mediterranean shrub that sprouts purple flowers. "Rosemary has been shown to have significant antimicrobial, anti-inflammatory, anti-oxidant, anti-apoptotic, anti-tumorigenic, antinociceptive, and neuroprotective properties,", says Dermatologist Lauren Penzi. Rosemary oil can enhance hair growth whilst also preventing breakage by coating the hair with its fortifying features. It can also help with scalp irritation due to dandruff as it’s understood to be a vasodilator, meaning it helps with blood flow around the scalp. Anyone can use rosemary oil on their hair and it’s especially helpful for those experiencing hair shedding, thinning, breakage, or loss. Be sure to discuss the cause of hair loss with your dermatologist before trying any oils in your hair.