R89 is a homeopathic medicine that is marketed as a treatment for hair loss. It is a complex homeopathic remedy that contains Homeopathic Compositions, including Hypophysis, Juglans, Kalium phosphoricum, Polysorbatum and Testes.

According to homeopathic principles, R89 is believed to stimulate hair growth and reduce hair loss by addressing the underlying causes of hair loss, such as hormonal imbalances, stress, and nutritional deficiencies. Some people get positive results with R89, these effects may be due to a placebo effect or other factors.