Uk-vtct-level-4-laser-ipl Practice Questions - VTCT Level 4 Certificate In Laser & IPL Treatments (UK) Exam

Light must be reflected off the epidermis to prevent thermal damage to the dermis. A specific wavelength of light must be absorbed by a target chromophore and converted to heat, damaging it without affecting surrounding tissues. Any light source can be used to heat all skin structures equally to stimulate cellular turnover. Heat must be applied using physical contact to cool the epidermis before light emission.