Bio7 Hair Growth Oil Extra Strength helps to strengthen thicken and grow your hair prevent hair breakages and conditionsooth scalp. 7 Bio-Natural Extra Strength combination of Chb Oil Rice Oil Black Seed Oil Black Castor Oil Prickly Pear Oil Turmeric Oil Tea Tree and Rosemary helps to increase blood flow to the scalp supply valuable nutrients to hair roots stimulate hair follicles and strengthen hair shaft.