The most common reason we decline to operate is active autoimmune disease affecting the hair follicles. New follicles dropped into an autoimmune environment can be attacked the same way the original ones were. We require a documented stability period and dermatology coordination before we will operate.
Other absolute reasons include pregnancy or active breastfeeding, uncontrolled bleeding disorder or full-dose anticoagulation without prescriber clearance, recent isotretinoin (Accutane) treatment within six months, and active inflammatory disease in the brow area.
We also decline cases where the donor area is inadequate to support the target density without creating visible thinning at the donor site, or where the patient is seeking a brow shape that violates the anatomic plausibility of their face. We say so kindly and design a shape we can credibly build instead, or refer to a different studio.