"Light Type: The two options most laser hair growth devices use are red light LEDs or laser diodes. Most do not use both, although the iRestore helmet is an exception. Each has its benefits. Laser diodes are more powerful than LEDs and can penetrate to the hair follicle root more effectively. Red light LEDs are less effective, but more comfortable for the average user."
"The lack of deep penetration means users are less likely to experience redness, swelling, and irritation after therapy. LEDS are therefore better for sensitive scalps and cases of minor shedding and early-stage hair loss. Treatment Length and Frequency: We are talking how often you have to use the device and for how long. For some of these you only have to use them for 10 minutes per session, while others have sessions lasting up to 25 minutes."
Available device forms include helmets, discreet hats (HigherDose, Capillus laser cap), and laser combs (Ultima 12 Classic), with combs noted for comfort and ease of use. Light sources are typically red light LEDs or laser diodes, with some devices combining both. Laser diodes deliver greater power and deeper follicle penetration, making them preferable for users seeking significant regrowth. Red light LEDs provide gentler, shallower treatment with lower risk of redness, swelling, and irritation, suitable for sensitive scalps and early-stage hair loss. Session durations range from 10 to 25 minutes with frequencies from daily to three times weekly. Devices selected are FDA-cleared via 510(k) substantial equivalence.
Read at www.esquire.com
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