The lamp inside an IPL handset is a consumable, and it is the part of the purchase most people do not price in. Whether that matters depends on a single design decision the manufacturer made: whether the lamp can be replaced.
- Device
- IPL handset
- Time
- 10 minutes
- Tools
- Your device’s flash counter
- Difficulty
- No disassembly
Two designs, two end states
Devices with replaceable cartridges have a lamp module that slides out. When the flash count runs out, the handset keeps working and you buy a new cartridge. Devices with sealed lamps have the lamp built in, and when its rated life ends the whole handset reaches the end of its life with it.
Neither approach is wrong, but they produce very different long-run costs, and the cost of cartridges is usually easier to find after purchase than before.
Turning flash counts into real use
- Work out flashes per session Manufacturers usually publish an approximate flash count per body area — a pair of lower legs is typically the largest. Add up the areas you actually treat.
- Multiply by the schedule An initial course is commonly eight to twelve sessions, followed by maintenance. Multiply your per-session count by the full course, then add maintenance at whatever interval your manual specifies.
- Compare against the rating A device rated for a few hundred thousand flashes may cover many years for one person treating small areas, and a fraction of that for someone treating full legs regularly.
- Check whether the counter counts down or up Some devices display remaining flashes, some display used ones, and some only warn near the end. Knowing which you have avoids a surprise mid-course.
Output falls before the count ends
A flash lamp does not deliver identical energy from its first pulse to its last. Output declines gradually across the lamp’s life, and a device approaching the end of its rating may be delivering noticeably less than it did when new.
The practical symptom is a course that started well and has slowed, on the same settings and the same schedule. If your device is late in its rated life and results have plateaued, the lamp is a more likely explanation than the growth cycle.
What to check before buying
Find the flash rating and whether the lamp is replaceable. If it is, find the price and availability of cartridges from the manufacturer rather than assuming a third party will supply them — cartridges are frequently model-specific, and a discontinued model can leave a working handset with no consumable.
If the lamp is sealed, the flash rating is the device’s lifetime. Divide the purchase price by the number of full courses it will cover, and compare that with a replaceable-cartridge device including its cartridges. That comparison often reverses the apparent price ordering.
Making the lamp last
Avoid overlapping passes, which spend flashes on skin already treated. Treat only the areas you intend to treat rather than working freehand across a whole limb. And keep the treatment window clean — a window fogged with residue scatters light, which reduces what reaches the follicle without reducing the flash count at all.
Sources
- Laser hair removal: overview — American Academy of Dermatology
- Dermatologists debunk common misconceptions about laser hair removal — American Academy of Dermatology
- Medical lasers — U.S. Food and Drug Administration