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Water is the chromophore targeted by ablative resurfacing lasers. Because skin is mostly water, far-infrared wavelengths like CO2 (10,600nm) are absorbed instantly at the surface, vaporising tissue for powerful resurfacing.
Skin is roughly two-thirds water, and water is a powerful chromophore in the far-infrared part of the spectrum. This is the basis of ablative resurfacing: a CO2 laser at 10,600nm—or an Er:YAG at 2,940nm—is absorbed almost entirely by water in the most superficial skin, flashing it to vapour and removing tissue layer by layer.
Because the absorption is so strong and shallow, ablative lasers deliver precise, controlled resurfacing with intense collagen stimulation in the healing response—ideal for deep wrinkles, scars and significant sun damage. Er:YAG, absorbed even more strongly by water, is more superficial and gentler than CO2. Delivering this energy fractionally keeps the dramatic results while slashing downtime.
Understanding water as the target explains why these are the most powerful resurfacing tools and why they carry the most downtime.
Skin is mostly water, so a water-tuned laser resurfaces from the surface down—maximum result, maximum recovery.
Ablative lasers vaporise the surface layers of skin for maximal resurfacing with real down
A chromophore is the structure in the skin that absorbs a particular wavelength of light.
Fractional describes a laser that treats the skin in a grid of microscopic columns, leavin
Water is the chromophore targeted by ablative resurfacing lasers—CO2 (10,600nm) and Er:YAG (2,940nm) are absorbed by skin's water content to vaporise tissue for powerful wrinkle, scar and sun-damage resurfacing.