Before the menopause, hair roots are protected by high levels of female hormones (estrogen). After the menopause, estrogen levels will decline and the impact of male hormones (testosterone) will increase. The consequence: hair loss. Nature's phyto active ingredients help the scalp protect itself from the consequences of declining estrogen levels. The caffeine in this shampoo prevents premature exhaustion of hair growth caused by the impacts of testosterone. When washing, the active caffeine ingredient penetrates all the way into the hair follicle, where it can be detected after being left on for as little as 120 seconds. This shampoo only contains a small amount of hair conditioning agents to ensure that your hairstyle retains its volume.