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  1. hablemos de...... fotodepilación Dra Lia Valencia dermatóloga

  2. A broad spectrum of Visible light and near infra red Microwaves TV and radio waves x-rays cosmic rays 1064 532 577-630 694 755 2940 10600 190 - 390 488 - 514 UV VISIBLE INFRARED 400 700

  3. fuente luz nm melanina target hemoglobina agua

  4. 100,000 Er:YAG 10,000 Melanin 1,000 CO2 Water 100 Hemoglobin 10 Oxyhemoglobin 1.0 Absorption Coefficient (per centimeter) 0.1 0.01 0.001 0.0001 0.2 1.0 3.0 10 20 Wavelength (Microns) Absorption Spectrum of Tissue Targets

  5. TECNOLOGIA 1970 1980 1990 1995 2000 Intense Pulsed Light Lasers elōsTM Conducted RF Light Epidermis Dermis Subdermal Fat Same clinical targets

  6. LASER una única longitud de onda. IPL: luz pulsada intensa varias longitudes de onda

  7. Light vs. Laser Light Laser NONCOHERENT POLYCHROMATIC Multiapplication DIVERGENT COHERENT MONOCHROMATIC Limited applications COLLIMATED

  8. Principles of Selective Photothermolysis Photothermolysis - • The absorption of light (photo) in pigments (hemoglobin, melanin) • The transformation of absorbed light into heat (thermo) • The destruction (lysis) of the target cells by the high temperature • Minimal absorption and heat production in epidermis and dermis (without pigments)

  9. Hair Anatomy Epidermis Sebaceous Gland Bulge Follicle Vascular Supply (Matrix) Bulb Bulb / bulge are critical structures responsible for hair regrowth

  10. Hair Biology Anagen Catagen Telogen • Follicles cycle through growth and dormancy stages • anagen - growth • catagen - atrophy / loss of nourishment • telogen - dormancy / Shed off • Various anatomical locations have different cycle durations • Follicles are in various stages of the cycle – not synchronized

  11. Hair Removal Patient Selection • All skin types (I-VI) • All body locations • All hair depths • All hair colors (light hair ~40% clearance and 8-12 sessions) • All hair diameters except villous hair

  12. patologias beneficiadas . hirsutismo . hipertricosis . hipertricosis medicamentosas . foliculitis crónica .nevus de becker . otros

  13. Contraindicaciones • Marcapasos • Piel bronceada • Embarazo • Infecciones locales • Depilación reciente • Otras terapias lumínicas recientes • Hirsutismo sin previo estudio ,ni tratamiento • otros

  14. ESPECTATIVAS REALISTAS • DEPILACIÓN PROLONGADA, NO HAY DEPILACIÓN DEFINITIVA • MULTIPLES SESIONES CON POTENCIALES RECRECIMIENTOS • Nuevos folículos pueden ser activados • RESPUESTA NO ES INMEDIATA • El pelo se cae aproximadamente en 2 semanas • RESPUESTA DEPENDE DE VARIOS FACTORES: • Fototipo • Genético • Hormonal, metabólico El tiempo y % de aclaramiento , número de sesiones y persistencia a largo tiempo es INDIVIDUAL!

  15. Possible Side Effects (rare) • Discomfort • Excessive swelling/reddening • Burn w/wo blister • Damage to natural skin texture • Change of pigmentation: (hyper or hypo - pigmentation) • Scarring . Crecimiento paradójico Most of the possible side effects are transient and treatable and are more common on dark skin

  16. MENTÓN

  17. AXILA

  18. ¡¡¡ MUCHAS GRACIAS!!!