Laser IPL vs. Traditional Laser: What’s the Difference?

Ah, the classic question we often get asked! Before we dive into the differences between traditional lasers and IPL lasers, let’s first establish that both are photoepilation methods that operate on the same fundamental principles:

The hair is removed at the root using high-intensity light.
The hair must have dark pigmentation.
The hair must be in its active growth phase, known as the anagen phase.

If you haven’t already, we recommend that you read this article to learn more about the principles of photoepilation. Also, keep in mind that we often use the term “IPL laser” because it is more familiar to our clients, but both methods work similarly.

Now, let’s get to the heart of the matter: what distinguishes IPL from traditional lasers? The answer is quite simple—the difference lies in how each device projects and disperses light.

Light Projection

Traditional lasers emit a unidirectional beam of light, with photons travelling in the same direction. In contrast, IPL devices emit a multidirectional light beam with more dispersed photons. Although the speed of light differs between the two, the outcome is the same: the energy travels through the hair shaft, and thermal transfer eliminates the hair at the root.

It is true that traditional lasers emit a more concentrated light, which is often perceived as more “powerful”. This is why some people find the process more uncomfortable. However, this does not guarantee better results. Unidirectional light beams are crucial for treatments such as CO2 laser therapy or surgical procedures that require the removal of a skin layer. However, for photoepilation, such intensity isn’t necessary.

It’s also important to address the misconceptions surrounding IPL devices. A more concentrated and powerful light beam, like that of a traditional laser, doesn’t necessarily mean better performance. Similarly, the level of discomfort during treatment should not be used as a measure of success. The key is to actually ensure effective thermal transfer to eliminate the hair. IPL lasers, with their multidirectional light, achieve this just as effectively as traditional lasers.

Light Dispersion

Let’s review some high school physics. The phenomenon of dispersion explains why white light splits into colours. Just like in a rainbow, the colour spectrum follows a specific order that never changes. White light, also called polychromatic light, can be broken down into seven monochromatic rays: red, orange, yellow, green, blue, indigo, and violet.

The key concept in photoepilation is that each colour has its unique wavelength, measured in nanometres, which enables it to penetrate different layers of skin.

So, what does this theory tell us about laser devices?

Traditional lasers emit monochromatic light, meaning that they only use one colour and target a single layer of skin. For example, an Alexandrite laser machine emits a wavelength of 755 nanometres, corresponding to red light. The depth at which the machine penetrates the skin depends on the colour stone inside the device.

IPL machines, on the other hand, emit a polychromatic light that is then filtered to become monochromatic. The filters can be adjusted based on the skin layer being treated. This makes IPL treatments highly customizable, as the light only penetrates to the specified depth, which is determined by the chosen filter.

“Using an IPL machine requires strong analytical skills. That’s why Beauté Pure technicians regularly attend advanced training sessions. Technicians must carefully observe the client’s hair pigmentation, density, and phototype during each session in order to choose a filter that will provide the best possible results. Since every client is different, each treatment must be tailored to their specific needs” .

— Andrée-Anne, Trainer and Administrative Assistant

Both traditional lasers and IPL lasers are highly effective photoepilation techniques. Each machine has unique characteristics tailored to different needs. Neither is inherently better than the other.

It is important to remember that results are not solely determined by the machine. Factors like hormones, skin type, hair growth patterns, and a client’s medical history also play a role.

If you have any remaining questions about IPL laser treatments, don’t hesitate to come in for a free consultation. Our experienced technicians will be happy to provide you with more information about our technology and help you make a well-informed decision!