It Comes Down To Water

Every ablative laser works the same way. It heats the water inside skin until that tissue vaporises. What separates one laser from another is how strongly its particular wavelength is absorbed by water. Absorb strongly, and the energy is spent in a very thin layer, lifting that layer off cleanly. Absorb weakly, and the energy travels further, heating tissue below and around the target as well as the target itself. That single property sets recovery time, risk, and what each laser is genuinely good at.
Sun Damage
Pigmented Lesions
Texture & Pores
Acne Scars
Vascular Concerns
Fine Lines & Wrinkles
Skin Laxity
Redness & Rosacea
The Central Business District

Southern Skin and Wellness is located directly in the heart of the New Orleans CBD.

What You

Trade

Neither choice is free. Stated both ways:

What CO2 buys

More collagen contraction from heat, so more tightening in a single session. Good control of bleeding. A long clinical track record.

What CO2 costs

Roughly one to two weeks before you are presentable, redness that can persist well beyond that, and a materially higher risk of pigment change afterwards — particularly in Fitzpatrick III and above, which is a large share of this city.

What erbium buys

Days rather than a fortnight, far less lasting redness, and safety well down the Fitzpatrick scale.

What erbium used to cost

Less thermal tightening. Which is the reason the next section exists.

Three Wavelengths

Three wavelengths do almost all ablative resurfacing. They are not interchangeable.

CO2 — 10,600 nm

Absorbed by water roughly fifteen times less strongly than erbium. The energy reaches further and leaves a zone of heated, coagulated tissue beneath the surface it removes. That heat contracts collagen, which is a real benefit, and it is also the reason recovery runs long.

Erbium — 2,940 nm

Sits at the peak of water absorption. Removes tissue in a far thinner layer with a fraction of the residual heat. Faster healing, less lasting redness, and a considerably lower risk of pigment change afterwards.

Erbium glass fiber — 2,910 nm

The same water peak and, for practical purposes, the same absorption. What differs is delivery: through a fiber, which allows pulse shapes and spot geometries the others cannot produce.

CO2 Laser Resurfacing

Before & After

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Why We Chose Erbium

Erbium's old limitation was laxity. Tightening was a thermal effect, and erbium deliberately leaves very little heat behind, so it gave up that benefit in exchange for its safety.

Coring removes that trade. Rather than shrinking tissue with heat, narrow full-thickness columns of skin are taken out entirely. As each column heals, the surrounding tissue draws together. Laxity is addressed by removing tissue instead of heating it — mechanically, which is closer to how surgery works than to how a heat-based device works.

So the choice is no longer safety or tightening. Dr. Lindley works in erbium because it now offers both, and because in this climate, across this range of skin tones, the pigment risk that travels with heat is not a small consideration.

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The Physics.

Not The Brochure.

Devices and model names change every few years. Water absorption does not. A wavelength that water absorbed fifteen times less strongly in 1995 is absorbed fifteen times less strongly today, and the trade it asks you to make is the same trade. That is why this page is about wavelengths rather than brand names.
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