Conditioners can fortify hair, alter its behavior, and protect it but they do not promote new hair growth. Hair restorers with active ingredients like finasteride and minoxidil are used for promoting hair growth.
Using a conditioner can fortify damaged areas of the hair, can alter the way the hair behaves such as improving its manageability, and can help protect against further damage by reducing breakage and split ends. However, conditioners are not designed to increase new hair growth. To address hair loss, treatments like finasteride, dutasteride, and minoxidil have been shown to have moderate success, primarily in preventing further hair loss rather than triggering new growth. Hair restorers are specially formulated products that target hair regrowth whereas conditioners are generally used for the maintenance and minor repair of hair.