They are not the same technology
Both treatments work on the same underlying principle: light is absorbed by the pigment in your hair, converts to heat, and damages the follicle enough to slow regrowth. That shared principle is why they get lumped together. The difference is in the light itself.
A laser produces a single, specific wavelength. Every photon that reaches your skin is the same, and that wavelength is chosen because it is absorbed well by hair pigment and comparatively poorly by the surrounding skin.
IPL — intense pulsed light — is not a laser at all. It produces a broad spectrum of wavelengths at once, more like a very bright filtered flash than a focused beam. Filters narrow that range, but it remains a spread rather than a single point.
Why that difference matters in practice
A single wavelength means the energy is concentrated on the intended target. A spectrum means some of the energy is at wavelengths the hair does not absorb especially well — and some of it is absorbed by things you were not aiming at, including the pigment in your skin.
This has three practical consequences.
Consistency. Laser treatment tends to deliver more predictable results per session, because more of the delivered energy reaches the follicle.
Number of sessions. Because each IPL session generally does less per visit, courses tend to run longer. A treatment advertised at a lower price per session is not necessarily cheaper once you count the sessions required.
Skin tone. This is the significant one. Since IPL scatters energy across a range of wavelengths, more of it can be absorbed by melanin in the skin rather than in the hair. On deeper skin tones, that raises the risk of burns and of pigment changes afterwards. This is why IPL is generally considered better suited to lighter skin with dark hair, and why skin tone deserves its own conversation before you book anything.
When IPL is a perfectly reasonable choice
None of the above makes IPL a scam. It is a legitimate technology, and there are situations where it is a sensible pick.
If you have light skin and dark, coarse hair, IPL can work well, and it is often more affordable per session. If you are treating a large area where absolute precision matters less, the economics can favour it. IPL devices are also used for concerns beyond hair — broad-spectrum light is genuinely useful for some pigmentation and redness, which is why the same machine often appears on a menu under several names.
What matters is that the choice is made deliberately, based on your skin and your hair, rather than because one number on a price list was smaller.
The comparison the price list will not make for you
The honest summary: laser is generally more consistent per session, usually needs fewer sessions, and is the safer option across a wider range of skin tones. IPL is often cheaper per session, can work well on light skin with dark hair, and is more versatile across different concerns.
What neither technology can do is work on hair without enough pigment. Grey, white, light blonde and much red hair respond poorly to both, because both depend on pigment to find the target. If a provider promises otherwise, that is a reason to walk.
What to ask before you book either one
You do not need to become an expert. You need four answers, and a good provider will give them without hesitation.
“Is this a laser or IPL?” Ask plainly. A provider who is vague about which technology they are using is telling you something.
“Why is this the right choice for my skin and hair?” The answer should reference your colouring specifically, not a general claim about the machine.
“Realistically, how many sessions?” Then compare total cost rather than cost per session. This is where a cheap-looking course often stops being cheap.
“What happens if it does not work on my hair?” Anyone confident in the assessment will have a straight answer. Anyone who avoids the question is selling sessions rather than results.
Where this leaves you
The decision is less about which technology is superior in the abstract and more about which one matches the specific combination of your hair colour, your skin tone and the area you want treated. That combination is individual, and it is genuinely assessable — in person, in a few minutes, by someone willing to tell you when the answer is “neither.”
If you want to understand what the treatment itself involves before deciding, our guide to how laser hair removal works covers the mechanism, the session count and the honest limits in more detail.