The use of Hair Essentials may have an effect upon hormone receptors or cause hormone-like effects, according to Hair Essentials. Because Hair Essentials contains the ingredient saw palmetto, it might affect the female hormone and androgen receptors and thereby decrease the efficacy of oral contraceptives.
Nursing or pregnant women shouldn't use the product, and people who take any medications or have existing health conditions should consult with a doctor before using the product, cautions the Hair Essentials website. Hair Essentials, a dietary supplement designed to restore hair growth, is only for use by adults age 18 or older and should be kept away from children. As a dietary supplement, Hair Essentials hasn't been evaluated by the U.S. Food and Drug Administration.