The evidence
Read the papers, not the promises.
Every claim on this page comes from one of these. Swipe through them, open any one, and judge the evidence the way a doctor would. Two of them argue against laser, and they stay.
ResurfacingMeta analysis of randomised trials
Lasers and other modalities in skin rejuvenation and resurfacing
Fractional and ablative resurfacing improve texture and photodamage. Most trials compare one laser with another rather than with no treatment, so the honest claim is improvement, not transformation.
ResurfacingSystematic review
Laser combination treatments versus laser monotherapy in skin rejuvenation
Combining platforms can outperform a single laser for rejuvenation, which is the case for choosing the combination from the diagnosis rather than from whichever machine is in the room.
PigmentationSystematic review, 41 trials, 3,234 patients
Treatment of solar lentigines, a systematic review of clinical trials
For sun spots, laser outperforms topical agents, cryotherapy and peels. Picosecond platforms reached the highest success rates, 68 to 93 percent, with an acceptable safety profile.
PigmentationMeta analysis, 16 randomised trials
Laser and light based treatment of melasma
Laser belongs alongside photoprotection and topical agents for melasma, not in place of them. Follow up in most trials ran only two to six months, in a condition defined by coming back.
PigmentationReview
Laser and light therapies for melasma, current evidence
Short term lightening at best, high recurrence, and a real risk of post inflammatory hyperpigmentation, particularly in darker skin. This is the paper behind the sentence that laser does not clear melasma.
RednessMeta analysis, 4 studies, 141 participants
Pulsed dye laser versus intense pulsed light for facial erythema of rosacea
No statistically significant difference between the two platforms for facial redness, which is why the choice is made by diagnosis and skin type rather than by device.
RednessMeta analysis
Intense pulsed light and pulsed dye laser in the management of rosacea
Both reduce the vessels and the background redness. Rosacea relapses, so maintenance is part of the plan rather than a sign something went wrong.
ScarsMeta analysis and systematic review
CO2 fractional laser versus Er:YAG fractional laser for atrophic acne scars
Carbon dioxide was modestly more effective, odds ratio 1.81 with a 95 percent confidence interval of 1.08 to 3.01, at the cost of longer downtime. Scars improve by grades over three to six sessions.