Hair induction after laser-assisted hair removal and its treatment

Photoepilation: a growing trend in laser‐assisted cosmetic dermatology

“…In some cases, it has been reported that laser treatment actually induced hair growth, particularly on the face and neck. For example, in one study, this was noted in young females of Mediterranean and Middle Eastern descent and with darker skin types (III or IV) 12 . The induction of hair growth occurred regardless of the fluency or type of laser used, whether IPL or long‐pulsed alexandrite laser.…”

Removal of Unwanted Facial Hair

“…Unlike the studies from Greece [51] and Spain [52], a retrospective study from Canada involving a similar patient group size of 489 the incidence rate for terminal hair stimulation was found to be only 0.6% (3/489 patients) [53]. All three subjects had Type IV skin.…”

“…In a retrospective analysis of 750 patients of Mediterranean ancestry, with 4374 subjects administered laser treatments over a 7-year period, terminal hair induction was noted in 30 (4%) subjects [51]. In 28 of the 30 cases, the terminal hair growth was on the face.…”

Postradiation hypertrichosis: A paradox

“…[5][6][7] The phenomenon of an increase in hair density, color, or coarseness, or a combination of these at treated sites in the absence of any other known cause of hypertrichosis has been called by different names including "paradoxical hypertrichosis", "terminalization", "induction," and "terminal hair growth". [8] Paradoxical hypertrichosis was first described by Moreno-Arias et al, [9,10] as growth of hair in untreated areas in close proximity to areas treated with lasers.…”