IPL (Intense Pulsed Light)

IPL delivers a broad spectrum of light (typically 500–1200nm) in intense pulses, filtered to target specific chromophores. For pigmentation: melanin absorbs the light, heats up, and fragments — the dark spots darken initially then shed within 7–14 days. For redness/vessels: oxyhemoglobin absorbs the light, causing capillaries to coagulate and be absorbed by the body. Unlike lasers (which deliver one specific wavelength), IPL covers multiple targets in one pass. Filter selection by the technician customizes the treatment to the patient's primary concern.

The session takes 20–45 minutes. Gel is applied to the skin. Goggles are worn (mandatory). The IPL handpiece is pressed flat against skin and light pulses are delivered. Each pulse feels like a rubber band snap with heat — 4–6/10. Immediately post: redness, warmth. Pigmented spots will darken (this is correct and expected). Days 7–14: darkened spots slough off. SPF mandatory for 2 weeks. One session helps; a series of 3–5 is typical for optimal results.

IPL technology was developed in the 1990s and has been refined significantly since. In Korea, IPL is often offered as a budget-friendly alternative to Q-switched laser toning for pigmentation. Korean clinics use IPL primarily for: sun damage, rosacea-related redness, freckles, and visible capillaries. The PhotoFacial (a branded IPL protocol) became popular in Korea through American dermatology influence. Korean IPL brands include Lutronic's Clarity, DPL devices from various manufacturers.