This serum is specifically formulated to increase blood flow and stimulate your follicles contributing to the circulation and at the same time nourishing your scalp and skin cells with vitamins A D and E coupled with the healing and strengthening benefits of the moringa seed , the Eucalyptus plant , mint leaves , Jamaican black castor oil. Aloe extract, rosebud , ginger , tea tree , African Chebe from chad , coconut and black seed oilsIt smells of flowers and happiness , but this is not a perfume this is highly potent and I suggest u use sparingly ... the tingle is normal the way combined the ingredients to wake up that hair line so your hair can be healthy all around.Shake well and enjoy a few precious drops 2 -3 times a week at minimum for best results...