An unlabeled pharmacy bottle and a glass of water with a light therapy cap in the background

DHT Blockers for Hair Loss: What the Evidence Says

DHT blockers are medicines or products intended to reduce the effect of dihydrotestosterone, a hormone linked to pattern hair loss. Here’s what the evidence says about prescription medicines, saw palmetto, side effects, and other options.

A handheld light therapy hair brush with red lights between the bristles on a wooden vanity

Red Light Therapy Hair Brush: Does It Work?

Red light brushes combine light with features such as vibration, heat, or serum reservoirs, but those add-ons do not all have the same evidence. Here’s what studies of low-level light can tell you and what to check before choosing a device.

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