Conversion therapy does neither. “Conversion” implies changing a person. Multiple studies show that “Conversion therapy” is not effective. “Therapy” implies that it is an attempt to make a person better. Since being a homosexual is not a defect, as evidenced by the DSM-III which removed homosexuality. Research and subsequent studies consistently failed to produce any empirical or scientific basis for regarding homosexuality as anything other than a natural and normal sexual orientation that is a healthy and positive expression of human sexuality.
So-called “Conversion therapy” is simply abuse.