aliexpressnonsense

The description of this device sounds very similar to those of reputable brands.

IPL devices usually have a service life and stop functioning after a fixed number of flashes. The light has a limited lifespan. Adding an artificial limit would ordinarily be a bad thing, but IPLs are medical devices and its safer to kill the device prematurely than risk it failing in a way that endangers the user.

The skin tone chart is also common for IPLs. They work by heating hair follicles with a very bright light to stop them growing. There needs to be enough contrast between the skin and hair for that to work. Reputable manufacturers publish a similar chart.

The materials posted do not seem innately unreasonable. Seems pretty common documentation for IPL devices. I would not trust any medical device from aliexpress. Braun makes an LPL with a similarly limited lifespan and similar published skin tone chart.

I have one of these (albeit from Braun, not AliExpress). The high-power pulsed laser does actually wear out eventually, so they're hardcoded to stop working after several hundred thousand flashes. Yeah, the hard cutoff is a bit of planned obsolescence, but I've been using mine regularly for 3.5 years and it hasn't run out yet.

Also, the skin chart is some accidental racism. These only work best if you have light skin and dark hair, so that the laser light is absorbed by the hair follicles, damaging them. If you have skin that's too dark, too much light will be absorbed by your skin and probably burn you. If your hair is too light-colored, not as much light will be absorbed by the follicles and it won't be as effective.

power cord

This was also part of it.