One scrapes off the outermost dead layer of skin. The other deposits energy that injures the skin in a controlled way so it repairs itself. That is the dividing line in this whole category. Microdermabrasion is mechanical: crystals or a diamond-grit tip plus vacuum, working on a layer roughly 9 microns thick that regrows within days. A laser is an energy device: light absorbed by a specific target in the skin, converted to heat or a shockwave, causing deliberate damage that the body then repairs. They are not two strengths of the same thing.
"Laser" is not one treatment, and that matters more than anything else on this page. A Q-switched 1064 nm laser breaking up tattoo ink, a fractional 1550 nm laser making columns of thermal injury in the dermis, and a fully ablative CO2 laser vaporizing the surface are as different from each other as any of them is from microdermabrasion. When someone says "laser," ask which wavelength, which pulse duration, and which cleared indication they are using it for.
No trial has ever compared microdermabrasion with any laser for a cosmetic result. In the entire published literature, the two appear together as combination or sequential therapy, never as competing alternatives. The closest thing to a genuine randomized comparison used them as skin preparation before photodynamic therapy for sun-damage lesions, and the endpoint was clearance of those lesions, not how the skin looked.
Their FDA positions are opposite, and this is the one asymmetry worth memorizing. Microdermabrasion devices are Class I, product code GFE, 21 CFR 878.4820, and are exempt from premarket review subject to the limitations in 21 CFR 878.9, so no currently marketed microdermabrasion machine holds a cleared indication; the product code contains only two clearances ever, K905046 in 1990 and K963204 in 1996, both granted before the 1998 exemption and neither for a modern microdermabrasion system. Cosmetic lasers are Class II devices that do go through 510(k) review and do carry named, cleared indications. To take one real example, the Hollywood Spectra laser system was cleared in February 2022 under K213569 with an indications list that names tattoo removal, nevus of Ota, treatment of common nevi, acne scars and wrinkles, melasma, inflammatory acne, lentigines and post-inflammatory hyperpigmentation, among others. It is a prescription device. That is a real regulatory review, and it is not something any microdermabrasion machine has.
Crystal microdermabrasion propels inert crystals at the skin and vacuums them back. Diamond-tip microdermabrasion drags a diamond-grit wand across the skin while vacuum draws the skin against it. Both are dry, superficial, and aimed at the outermost dead layer.
The ones people mean in a cosmetic clinic include Q-switched and picosecond lasers for pigment and tattoos, non-ablative fractional lasers for texture and scars, ablative fractional and fully ablative CO2 or erbium lasers for resurfacing, vascular lasers for redness and vessels, and hair removal lasers, most importantly the long-pulsed 1064 nm Nd:YAG. Intense pulsed light is often sold as "laser" and is not a laser at all: it is broad-spectrum light.
The measured biology is more interesting than the mechanics. In 49 people given a single treatment, no change in the thickness of the outer dead layer was detected, yet the skin rapidly switched on inflammatory signals and collagen-remodeling enzymes, and 2 of 11 subjects tested showed increased type I procollagen at day 14. Whatever benefit exists comes from that signal, not from tissue removal.
Each laser is chosen so its wavelength is preferentially absorbed by a particular target: melanin, hemoglobin, tattoo ink, or water in tissue. The absorbed energy becomes heat or a shockwave that destroys or fragments that target, and repair follows. The choice of wavelength and pulse duration is what determines what gets damaged and how deeply.
The outer dead layer averages about 9.42 microns thick when imaged in living skin. Laboratory work found moderate settings could remove that full thickness selectively with little damage below, that more passes moved into damage to deeper layers, and that holding the tip still caused micro-blisters. Downtime matches: water loss through the skin is back to baseline by day 2 after a diamond treatment and redness by day 1, and in a head-to-head against a glycolic acid peel, redness settled in about 1 day after microdermabrasion versus about 4 days after the peel.
A fully ablative CO2 laser vaporizes tissue at the surface and heats below it. A non-ablative fractional laser leaves the surface intact and injures columns of tissue underneath. A Q-switched laser is not primarily about depth at all, but about shattering a pigmented target with a very short pulse. Downtime tracks that range, from none after some non-ablative and Q-switched treatments to raw, weeping, crusting skin for days or weeks after fully ablative resurfacing, with a real infection risk while the surface is open.
Powered dermabrasion devices were exempted from premarket notification in 1998, manual ones in 1994. No microdermabrasion device has FDA-cleared indications for use. General controls still apply, meaning registration, device listing, manufacturing quality rules and a ban on false labeling, but the FDA has never reviewed an efficacy claim for any of these machines.
Cosmetic lasers are Class II devices under 21 CFR 878.4810 and go through 510(k) review. To use one cleared example, K213569 names tattoo removal, nevus of Ota, common nevi, acne scars and wrinkles, melasma, inflammatory acne, epidermal pigmented lesions, minor vascular lesions, lentigines and post-inflammatory hyperpigmentation, and is restricted to prescription use.
In 16 women treated weekly for six weeks with a concurrent skincare regimen, fine wrinkles, dullness, pigmentation and large pores improved by the third treatment, with color measurement showing more brightness and less yellowness. There was no untreated control. An evidence review concluded microdermabrasion can improve skin contour irregularities and help deliver certain medicines, and that its role in pigment disorders and acne is limited.
Tattoo ink, birthmarks, broken vessels, unwanted hair and deep scarring are laser territory, because no amount of surface abrasion touches them. For age spots specifically, a split-hand randomized trial in 45 people found a Q-switched 532 nm laser significantly better than a 35 percent acid peel for lightening, with fewer patients developing darkening afterward.
Burns and pigment loss are not microdermabrasion risks in the way they are laser risks. But it is not risk-free on pigment: in 11 women studied with a treated and an untreated side, aggressive crystal microdermabrasion produced mild to marked hyperpigmentation that remained for a variable period. No study has ever reported a rate of darkening after microdermabrasion in any skin type, and no study in this field documented a single Fitzpatrick VI patient.
Because most cosmetic lasers work by being absorbed in a pigmented target, more melanin in the skin means more unintended absorption, more heat where it was not wanted, and a higher risk of burns, darkening and permanent lightening. A 2026 review of noninvasive treatments in Fitzpatrick IV to VI advises that intense pulsed light capable of resurfacing and hair removal should be avoided in these skin tones because of hyper- and hypopigmentation, and names the long-pulsed 1064 nm Nd:YAG as the gold standard for hair removal in darker skin.
The weekly interval comes from barrier recovery rather than from a comparison of results. A consumer survey put the average at $177 from 90 self-reported reviews, range up to $350, updated June 2023. The last year a professional society reported microdermabrasion as a separate fee was 2020, at $167.
Depending on the device, a course might be one to six sessions weeks apart. The last separate professional society figures, from 2020, were $2,509 for ablative laser skin resurfacing and $1,445 for non-ablative. That society stopped reporting fees for treatments like these after 2023.
The literature treats these as partners, not rivals. Searches for microdermabrasion against any laser return combination studies, pretreatment studies and reviews, and no cosmetic head-to-head. The nearest genuine randomized comparisons put microdermabrasion against ablative fractional laser as ways of preparing skin so a photosensitizing drug soaks in before photodynamic therapy for actinic keratoses. Useful research, but the endpoint was clearance of sun-damage lesions, not appearance.
The reason is probably obvious once you see the depths involved. Nobody designs a trial of a treatment that acts on 9 microns of dead cells against one that vaporizes or heats living tissue millimeters down. They are not answering the same question.
The one design that does isolate microdermabrasion's contribution is a split-face randomized trial that added microdermabrasion to a 1450 nm diode laser for inflammatory acne and compared it with the laser alone. That study exists, and it is the right shape for the question of whether abrasion adds anything to an energy treatment.
Pigment change and burns in darker skin are a genuine laser risk, and they are not a microdermabrasion risk in the same way. This is not a small distinction, and it is the main reason this page matters.
Most cosmetic lasers work because a specific target absorbs their wavelength. Melanin absorbs broadly. In Fitzpatrick IV to VI skin, more of the delivered energy is absorbed in the epidermis where it was not aimed, which produces heat where it was not wanted. The consequences are burns, blistering, darkening that can last months, and lightening that can be permanent. A 2026 review of noninvasive cosmetic treatments in Fitzpatrick IV to VI states that intense pulsed light capable of resurfacing and hair removal should be avoided in these skin tones for exactly this reason, and identifies the long-pulsed 1064 nm Nd:YAG as the gold standard for hair removal in darker skin. The 1064 nm wavelength is preferred because it is absorbed less by epidermal melanin.
Microdermabrasion carries none of that, because it delivers no energy. What it can do is cause enough irritation to trigger pigment in skin prone to it. In 11 women treated with aggressive crystal settings on one side and left untreated on the other, mild to marked hyperpigmentation was documented on biopsy and persisted for a variable period. Set against that, one small study of twelve people found less melanin in skin treated with microdermabrasion - but the whole treated area also received topical tranexamic acid, and the authors attributed the pigment change to the acid rather than to the abrasion. The histology is genuinely mixed, and no study has ever reported a rate of darkening after microdermabrasion in any skin type. That absence is worth saying out loud rather than filling with a number.
One further gap: across the microdermabrasion studies with recorded skin types, not a single documented Fitzpatrick VI patient appears. If you have deeply pigmented skin, this treatment has not really been studied on you either.
The line most states draw is depth, and lasers are usually on the far side of it. Texas is a clear published example: its licensing department states that an esthetician or cosmetology operator license does not authorize the use of lasers for hair removal, skin resurfacing or teeth whitening. Microdermabrasion is within an esthetician's scope there only where the device and technique remove only dead skin cells from the outermost layer and do not pierce the dermal layer, and deeper treatment must be administered or delegated by a physician.
Rules vary by state, and the medical practice act and the cosmetology board can point in different directions. The practical question to ask before a laser treatment is who is operating the device, what training they have, and who is supervising.
Tell your provider your skin tone honestly and ask how they will adjust settings for it. Ask for a test patch before any laser treatment if you have Fitzpatrick IV to VI skin. Avoid laser treatment on tanned skin, and avoid scheduling one during a period of heavy sun exposure. Recent sun exposure raises the risk of pigment problems.
If you get cold sores, say so when you book. Antiviral medicine has to be prescribed and started before the appointment. Reactivation is well documented after laser resurfacing and prophylaxis is standard practice there.
Tell your provider about any medication you take, including isotretinoin, and about a history of keloid scarring, melasma or darkening after previous injuries.
Ask which specific device is being used and what it is cleared to treat. For microdermabrasion, "FDA cleared" is not accurate for any machine, and if a clinic says it, it is worth asking what else they have been told.