Lumenis Stellar M22
How IPL Works, and Why the Filters Matter
IPL works by selective photothermolysis: light of a particular color is absorbed by a particular target, heats it, and leaves the surrounding skin largely untouched. A flash of IPL contains many wavelengths at once. A filter placed in front of the light guide cuts off the shorter wavelengths, and choosing that filter is how the treatment is aimed. Shorter cut-offs reach superficial brown pigment. Longer ones penetrate deeper and are safer on skin with more natural pigment.
That is why the device matters. The Lumenis Stellar M22 is a multi-application platform from Lumenis, the company whose predecessor brought the first IPL to market in the 1990s. Its IPL handpiece carries nine filters, and the provider changes them during a session as the target changes. A typical face treatment uses a shorter filter on sun spots and the vascular filter across the nose and cheeks.
| Feature | Stellar M22 filter | What it is used for |
|---|
| 515 and 560 nm | Cut-off filters that pass light from 515 or 560 nm upward | Superficial brown pigment such as sun spots and freckles on fair skin |
| 590 and 615 nm | Mid-range cut-off filters | Diffuse redness and fine vessels, and pigment on slightly deeper skin tones |
| 640, 695 and 755 nm | Longer cut-off filters that penetrate deeper | Deeper vessels, and a more conservative option for darker skin types |
| Vascular (530-650 + 900-1200 nm) | Dual-band filter that concentrates energy where hemoglobin absorbs | Rosacea redness, flushing and broken capillaries |
| Acne (400-600 + 800-1200 nm) | Dual-band filter | Mild to moderate inflammatory acne, an FDA-cleared indication |
Two Lumenis technologies shape how each pulse is delivered. Optimal Pulse Technology (OPT) keeps the energy level flat across the length of the pulse instead of spiking at the start, and SapphireCool light guides chill the skin at the point of contact. The Stellar M22 is FDA-cleared (510(k) K250809) for benign pigmented lesions, vascular lesions including the redness of rosacea and poikiloderma of Civatte, and inflammatory acne, among other uses.
The platform has peer-reviewed data of its own. In a 2024 randomized trial of 60 patients with redness-type rosacea, the M22's 590 nm and vascular filters reduced redness about as well as a pulsed dye laser over four sessions. Blistering was more common with the vascular filter than in the other groups, which is why we test spots and adjust settings rather than treating at the maximum.
Getting the Diagnosis Right Comes First
When IPL Is the Wrong Choice
IPL is not a melasma treatment
Melasma looks like sun damage but is driven by hormones, heat and light together. The European Society for Laser Dermatology advises that light and laser devices be used only with great caution for melasma, because heat can darken it. If your pigment is melasma, we recommend LaseMD and topical care instead of IPL.
Melasma. Blotchy, soft-edged patches that match on both cheeks, the forehead or upper lip are usually melasma, not sun spots. The European Society for Laser Dermatology's position statement calls IPL very effective for sun spots but says it should be used "with great caution" for melasma. Many people have both: melasma across the cheeks and ordinary sun spots on the temples. In that case we treat each area differently, and LaseMD takes the melasma. Our guide to telling sun spots from melasma walks through the differences.
Tanned skin. IPL can't tell the pigment in a sun spot from the pigment in a tan. Tanned skin absorbs energy meant for the spot, which raises the risk of burns and blotchy darkening. If you arrive with fresh color, we reschedule. This is also why fall and winter are the easiest seasons to start a series.
Deeper skin tones. The American Academy of Dermatology notes that darker skin is more prone to burns and dark marks after light and laser treatment. IPL works best on fair to medium skin (Fitzpatrick types I-III). Type IV is a case-by-case decision with conservative filters, and for types V-VI we recommend LaseMD, which targets water instead of pigment.
Spots that are raised, changing or irregular. IPL treats benign pigment only. A spot that is growing, bleeding, raised or unusual in color should be seen by a dermatologist before any cosmetic treatment.
