Lasers
Laser treatments for facial redness use specific wavelengths of light that are absorbed by the hemoglobin in the blood vessels causing the redness. When the laser energy is absorbed by the blood vessels, it heats them up, causing them to collapse and be reabsorbed by the body over time. This leads to a reduction in redness and visible blood vessels.
Different types of lasers are used for this purpose, such as pulsed dye lasers and Nd:YAG lasers. Pulsed dye lasers emit a specific wavelength of light that targets the blood vessels without damaging the surrounding skin. Nd:YAG lasers, on the other hand, can penetrate deeper into the skin and are effective for treating larger or deeper blood vessels.
IPL
IPL treatments are similar in principle to lasers, but they use a broad spectrum of light wavelengths instead of a single focused wavelength. This allows them to target a wider range of skin issues, including redness. The light energy emitted by the IPL device is absorbed by the hemoglobin in the blood vessels, causing them to heat up and coagulate. Over time, the body reabsorbs the treated blood vessels, leading to a reduction in redness.