Shaving between laser sessions: what you can and cannot do
The rule in one line. Shave as much as you like. Do not wax, pluck, thread, epilate or use hair-removal cream between sessions.
Why the line falls there. Everything on the allowed side removes hair above the skin. Everything on the forbidden side removes it from the follicle — and the follicle is the only thing the laser is aiming at.
What the laser is actually looking for
A hair-removal laser is aimed at pigment in the hair that is still rooted in the follicle. The energy travels down the hair shaft and is absorbed along the way. No hair in the follicle means nothing to absorb the energy, and the session does nothing at that spot.
That single fact explains every rule below. Shaving cuts the hair at the surface and leaves the root exactly where the laser needs it. Waxing and plucking pull the whole hair out, root included, and leave an empty follicle behind.
So the question is never “will it grow back in time”. It is whether the hair is still attached when you arrive.
The allowed list
- Razors, wet or dry, any time between sessions and right up to the day before.
- Electric shavers and trimmers, same reasoning.
- Trimming with scissors on longer areas, though shaving is easier.
The forbidden list, and what each one costs you
- Waxing and sugaring. Removes the root. Expect several weeks before there is anything to treat.
- Plucking and tweezing. The same problem in miniature — and the reason a chin or brow area can stall while everything else progresses.
- Threading. Also removes from the root.
- Epilator devices. Mechanical plucking, at scale.
- Depilatory creams. These dissolve hair at and slightly below the surface and can leave skin sensitised, which is a poor state to be treated in.
None of these damage your skin permanently or ruin your course. They waste the appointment you were about to have, which is a different kind of expensive.
When to shave before your appointment
The day before, or the morning of, is usually ideal. Two reasons:
- Hair above the skin is not helpful and can be a problem. Long hair on the surface absorbs energy where you do not want it, which is uncomfortable and can singe.
- Freshly shaved skin can be a little reactive. Shaving immediately before walking in leaves some people slightly irritated, which is why the night before suits most.
If you forget entirely, ring ahead. Some clinics will shave the area for you, some will ask you to reschedule, and it is better to know before you travel.
The stubble question
People often worry that shaving too soon leaves nothing for the laser to find. It does not. Hair that is rooted keeps its root whether or not there is stubble showing, and a smooth surface is exactly what the practitioner wants.
What you should not do is let it grow out “so there is something to treat”. That is waxing logic, and it belongs to a different method.
What about the areas you cannot easily reach
Backs, shoulders and the back of the neck are the usual difficulty. Ask when you book — most clinics would far rather sort it at the start of the appointment than lose the session. Bring someone or ask for help; nobody in a clinic finds this remarkable.
If you slipped and waxed
Say so. It is not a moral failing and no one will be annoyed — but a practitioner who does not know will treat an area that has nothing in it, mark the session as done, and you will have paid for nothing. Told in advance, they will simply move the appointment.
Where to book
- Downtown Montreal — 2365 rue Saint-Patrick, Unit A5
- Laval — 1655 boulevard de l’Avenir
- Saint-Léonard — 5045 rue Jean-Talon Est
- West Island — 45 boulevard Brunswick, Dollard-des-Ormeaux
Frequently asked questions
Can I shave between laser hair removal sessions?
Yes, as often as you like. Shaving cuts hair at the surface and leaves the root in the follicle, which is exactly what the next session needs to find. It is the only hair removal method that is fully compatible with a laser course.
Why can't I wax between laser sessions?
Because waxing pulls the hair out of the follicle, and the follicle is what the laser targets. An empty follicle gives the energy nothing to travel down, so the treated area gets no benefit from that session even though you have paid for it.
When should I shave before a laser appointment?
The night before or the morning of. Hair left long on the surface absorbs energy where it is not wanted, which is uncomfortable, while shaving in the doorway leaves some people a little irritated. The night before suits most people.
What if I forgot to shave?
Call the clinic before you set off. Some will shave the area for you at the start of the appointment and some will ask you to rebook, and it is much better to find out before you travel.
Does shaving make hair grow back thicker?
No. Shaving cuts the hair at the surface and leaves a blunt end, which can feel coarser as it grows out, but it does not change the hair itself or how it grows.
Related reading
General information about preparing for a treatment. It is not medical advice and no result is promised or implied. Whether a treatment suits you depends on your skin, your health and your history — that is a judgement for a qualified professional at a consultation. Protocols vary between clinics and devices; follow the instructions your own clinic gives you.
