At present, we have not found anything that can definitely turn gray hair into black hair after taking it. You can take medicines such as Hair Growth Pill, Wu Hair Pill, Jin Zhen Shou Wu Juice, etc. You can also choose dietary therapy such as black sesame, mulberry and longan meat. 1. Hair Growth Pill is composed of Chinese wolfberry, yellow essence and ganoderma lucidum, which can tonify the liver and kidney, and darken beard and hair. It is effective in treating premature graying of beard and hair, dry and lustrous hair and hair loss caused by deficiency of liver and kidney (weakness of liver and kidney). The contraindications and adverse effects of the drug are not exact. 2. Wuha Pill is composed of black sesame, raw rhizome and black beans, etc. It can treat gray hair caused by yin deficiency with blood heat. Contraindications and adverse reactions are not exact. 3. Jin Cherry Shou Wu Juice is composed of dog’s spine, angelica sinensis, chuanxiong rhizome, etc. It can treat gray hair, hair loss, dizziness, dizziness and menstrual disorders following deficiency of yin and blood, and insufficiency of liver and kidney. Contraindications and adverse reactions are not clear. 4. Black sesame and mulberry are both medicinal foods that can nourish the liver and kidney and darken hair; longan meat can nourish qi and blood, and sufficient qi and blood can nourish hair. If you have symptoms, you should take the medicine under the guidance of a medical professional, do not take the medicine blindly, in order to avoid delays in the condition or adverse reactions.