The Dr. Groot Scalp Revitalizing Solution Hair Thickening Shampoo Set includes two 23.6 oz bottles of shampoo. This product is designed to promote hair growth and thickening by revitalizing the scalp. Made in the United States, this shampoo is formulated to provide nourishment and support for healthy hair growth. Perfect for those looking to improve the overall health and appearance of their hair, this shampoo set is a must-have for anyone looking to achieve thicker, fuller locks.