The Science of IPL 

How light becomes a treatment ... At its core, IPL is not simply a skincare treatment. It is a light-based intervention grounded in physics, biology and controlled thermal response. Understanding how it works requires stepping briefly away from aesthetics, and into the behaviour of light within living tissue.

Selective photothermolysis — precision without incision

The fundamental principle behind IPL is something known as selective photothermolysis.

In simple terms, specific structures within the skin — known as chromophores — absorb light at particular wavelengths. In the context of IPL skin rejuvenation at Mirabel, the key target is melanin, the pigment responsible for areas of discolouration such as sun damage, age spots and uneven tone.

When melanin absorbs light energy, it is converted into heat. This heat response helps to fragment excess pigment so that it can gradually be cleared through the skin’s natural renewal processes. This is what allows IPL to improve pigmentation and uneven tone without breaking the surface of the skin.

Why IPL is not a laser

One of the most important distinctions is that IPL is not a laser. Laser devices emit a single, highly specific wavelength of light. IPL, by contrast, emits a broad spectrum of wavelengths, typically between 400 and 1400 nanometres, which can be filtered and adjusted. This gives IPL flexibility.

At Mirabel, that flexibility is used to support skin rejuvenation by targeting visible pigmentation, sun damage, uneven tone and selected acne-related concerns, while helping to improve overall clarity and skin quality.

What happens to pigment

When melanin absorbs IPL energy, it heats and fragments. These pigment fragments may temporarily darken before they are gradually brought to the surface and eliminated through the skin’s natural renewal process. This explains why treated pigmentation can sometimes appear more noticeable for a short period before it begins to clear. The process is gradual, controlled and cumulative.

A controlled response, not an aggressive one

Unlike ablative treatments, IPL does not remove layers of skin. Instead, it creates a measured thermal response — enough to stimulate change, but not enough to disrupt the surface. This balance is what allows:

• minimal downtime
• progressive improvement
• cumulative results over a course of treatments
• visible refinement without aggressive resurfacing