If you happen to be in the market for a small artificial sun, you may be interested to know that for about $1300, you can get a tennis-ball-sized LED array that outputs 120,000 lumens.

After 16 weeks of testing, we noticed visible results. Here are our favorite red light therapy devices for hair growth.

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A hands-on comparison between the two shows how the latest image models differ on price, speed, and creative control.