Interesting. I wonder how true this is.
LED lighting is great. The right bulb gives the same warm incandescent glow you love from a fraction of the energy. But there's a downside: while LEDs make cities look awesome, the most common type of LED lighting dims the ultraviolet trick laundry detergents use to make white clothes look whiter. The future is bright, but it's also kind of dingy.
The logic is 100% solid. Laundry products with "whitening" do in fact include fluorescent dyes that emit visible light under UV, and LED lighting does not emit any UV to speak of. But incandescent lights don't really emit all that much UV either, so it's really not much of a change unless you're going from fluorescent lamps to LEDs. And there's still a lot of UV in sunlight, assuming anyone still goes outside.
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