Have you ever had a mirror that was bright at first, but after a year or two, it just didn't seem as bright any more?
That's not your imagination. It's called light decay (or lumen depreciation).
What is light decay?
All LED lights get slightly dimmer over time. It's normal. But how fast they dim depends on three things: LED chip quality, driver quality, and heat dissipation.
What makes it worse?
Poor quality LED chips – they degrade faster.
Poor driver design – unstable current accelerates dimming.
Poor heat dissipation – heat is the enemy of LED. The hotter the chip runs, the faster it fades.
What makes it last longer?
Good quality chips
Stable constant-current drivers
Proper heat dissipation (aluminum frames help a lot)
What we do differently
All our LED mirrors use good chips, stable drivers (designed and made in-house), and aluminum frames for heat dissipation. That's why our brightness stays consistent for much longer than cheaper alternatives.
One more thing
Light decay is normal. It doesn't mean the mirror is broken. But if the brightness drops noticeably within a year - the quality just isn't there.