Rosemary oil and rosemary teas are used extensively for hair care in shampoos and lotions. Regular use of rosemary oil helps in stimulating follicles, as a result of which, hair grow longer and stronger. It is also believed that rosemary oil slows down premature hair loss and graying of hair. Hence it is an excellent tonic for bald people. Rosemary essential oil is also beneficial for dry and flaky scalps. Regular massage of scalp with rosemary oil nourishes the scalp and removes dandruff. Further, it is often mixed with tea tree oil and basil oil to treat scalp problems.