Why the waxing interval does not simply transfer
It is tempting to apply the waxing rule to the laser, and we understand the instinct — but the mechanisms are not the same. Waxing works by adhesion: hot wax grips the hair andthe surface layer of skin, and a retinoid loosens that surface layer, which is precisely why the AAD’s own instruction exists. The published concern is physical — removing skin along with the hair.
A laser works by light absorbed in the pigment of the hair; the AAD describes it as removing hair by vaporizing it. Nothing is being pulled off the surface. So the adhesion argument does not apply, and there is no published equivalent finding for retinoids and laser hair removal to replace it with. We could invent a confident interval here. Plenty of pages do. We would rather tell you the evidence is absent and give you the reasoning instead.
The isotretinoin case is different again, and it is the one place to be genuinely careful: the AAD’s waxing guidance says never to wax within six months of taking isotretinoin, and its laser preparation page asks you to disclose having taken it. If that is you, this is a conversation with the clinician, not a question for a website.
Do not quit the retinoid for the whole course
This is the most consequential paragraph on the page. The AAD puts a typical course at two to six treatments, spaced every four to six weeks, with a 10% to 25% reduction in hair after the first session. At the long end that is six months of appointments.
Now put that against what a retinoid needs. The double-blind work on prescription tretinoin found improvement in photoaging peaking at around ten months of daily use, with no further gain between ten and twenty-two months. A retinoid is a ten-month commitment that works by consistency, and stopping it for weeks at a time around each appointment is how people spend a year using a retinol and get the result of three months.
So: pause briefly around a session if you or your clinician want to, and resume. Treat the retinoid as the continuous thing and the sessions as the interruptions, not the other way round. Our frequency guide is the right place to rebuild from if you have been stopping and starting for months.
And the two rules the AAD is explicit about
Both are about color rather than retinoids, and both are absolute in the guidance: do not tan, outdoors or indoors, and do not use sunless tanners. The second surprises people, but the mechanism makes sense once you know what a self-tan is — the FDA describes DHA as a color additive that darkens skin by reacting with amino acids in its surface, so a sunless tan adds pigment to the layer a laser is aiming past. We have a separate guide to retinol and self-tanner for the rest of that interaction.
Sunscreen is the other instruction: broad-spectrum, SPF 30 or higher, water-resistant, every day before going outdoors, both before the course and after each session. That is already a requirement of any retinoid routine, so for once the two sets of advice point the same way. Our sunscreen guide covers how much is actually enough.