Activance is the only stabilised and patented formula on the market that delivers nature's vital nutrient, Rhodanide, straight to your hair. As rhodanide is essential to forming the bonds that strengthen, nurture, and protect your hair, Activance with Rhodanide helps to make your hair thicker, shinier, stronger, and more vibrant. Even better, it helps to stimulate hair growth by lengthening the hair cycle and reducing hair loss.