Is hair restoration surgery successful?

Yes and No. Hair restoration surgery can be very successful. It is the only treatment proven to restore hair, long term. Expectation is key. Hair restoration surgery will never replace the hair density that patients have in the posterior scalp, donor. Planning for hair restoration is of most importance taking into consider the age of the patient, future hair loss expectations and overall expectations.
Hair restoration. If by this you mean hair transplantation, if done properly, it can improve the appearance of the scalp.