A dermatological device that inhibits new hair growth that has no wires and is compact enough to be hand held, comprising: (1) an autonomous housing (20) configured to grip it with the hand of a person for cordless handling in a procedure that inhibits new hair growth； (2) a light source (10) inside the housing (20) to produce pulses of output light of pulse duration and creep of 4 J / cm2； (3) an electrical circuit that includes one or more batteries (18) inside the housing (20) to power the light source (10)； (4) a light path within the housing that includes an opening (14) through which light pulses safe for the eye propagate outside the housing (20), having sufficient properties for at least temporary inhibition of new growth of the hair； and (5) an optical diffuser (120； 125) arranged along the light path； so that in use, the apparatus that inhibits new hair growth produces a creep on an epidermis of a subject under treatment that is sufficient to at least temporarily inhibit new hair growth and that has insufficient integrated radiance to cause damage ocular； characterized in that the light source produces pulses of output light in the range of 4-100 J / cm2 and the optical diffuser is arranged so that an integrated radiance of the pulses of output light is reduced to a safe value for the eye .Un aparato dermatológico que inhibe el nuevo crecimiento del vello que no tiene cables y es lo suficientemente compacto para ser de mano, que comprende: (1) una carcasa autónoma (20) configurada para agarrarla con la mano de una persona para manipulación sin cables en un procedimiento que inhibe el nuevo crecimiento del vello； (2) una fuente de luz (10) dentro de la carcasa (20) para producir pulsos de luz de salida de duración del pulso y fluencia de 4 J/cm2； (3) un circuito eléctrico que incluye una o más baterías (18) dentro de la carcasa (20) para alimentar la fuente de luz (10)； (4) una trayectoria lumínica dentro de la carcasa que incluye una abertura (14) a través
