Hair removal device and method

Details Hair removal device and method Hair removal device and method

1991-10-29

1993-07-13

Pellegrino, Stephen C.

Surgery

Instruments

Means for removal of skin or material therefrom

606131, 606 9, A45D 2600

Patent

active

052269078

ABSTRACT:
The present invention provides a device and process for the permanent removal and of unwanted human hair. Hair on a section of skin is contaminated with a substance having high absorption of a frequency band of light which passes through the surface of the skin. The skin is illuminated with light at this frequency band at sufficient intensity and duration to kill the follicles of the hair. Specific embodiments to produce death of the follicles by heating and by photochemical reaction.

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patent: 3693623 (1972-09-01), Harte et al.
patent: 3769963 (1973-11-01), Goldman et al.
patent: 3794028 (1974-02-01), Mueller et al.
patent: 3834391 (1974-09-01), Block
patent: 4336809 (1982-06-01), Clark
patent: 4388924 (1983-06-01), Weissman
patent: 4608978 (1986-09-01), Rohr
patent: 4617926 (1986-10-01), Sutton
patent: 4813412 (1989-03-01), Yamazaki et al.
patent: 5059192 (1991-10-01), Zaias
Porphyrins In Tumor Phototherapy-Alessandra Andreoni et al.-May 16, 1983 pp. 143-155.
Investigation and Therapy In Dermatology With Dye Lasers A. Anders et al Jun. 20, 1977-pp. 520-526.

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