The present disclosure is related to a novel, fast, safe and reliable technique, in which liquid Nitrogen is used to eliminate through CRYONICS or cryogenization the external parasitosis that affects the human body, and are known as: A) Head lice, produced by infestation of small blood-sucking insects which are part of the Anoplura group and are scientifically known as Pediculus capitis B) Body lice, known as Pediculus humanus, that parasitize the body hair C) Pubic lice, also known as crab lice, caused by the infestation of the Pthirus pubis in the pubic hair of the perigenital and perianal areas of men. On the other hand, reference is made about the beneficial effect of the present invention for controlling other external parasitosis in other higher animal species such as: canines, felines and beef cattle, which are frequently parasitized by fleas, bedbugs, ticks, etc. Besides being able to control harmful insect pests for the agriculture, livestock or the human habitat, such as: Fl ies, mosquitoes, aphids, ants, termites, etc,. The technique disclosed in the present invention uses liquid Nitrogen causing death of these insects and parasites by freezing, resulting highly attractive for not causing damage to the environment since Nitrogen in its gaseous state, forms the 79% of the earth’s atmosphere.Esta invención hace referencia a una nueva técnica rápida, segura y confiable, en la cual se emplea el Nitrógeno en su estado líquido, para eliminar mediante la CRIONICA o "Criogenización" las parasitosis externas del ser humano conocidas como: A) "Piojos de la cabeza", producida por la infestación de pequeños insectos hematófagos del grupo u orden Anolura, denominados científicamente como "Pediculos capitis" B) "Piojos del cuerpo" conocidos como "Pediculos humanus" que parasitan el vello del cuerpo C) "Piojos del Pubis o Ladillas" ocasionada por la infestación del "Pthirus pubis" que infestan el vello púbico, de las áreas perigenital y perianal del hombre. Por otro lad
