Low Level Laser Therapy vs. LED therapy. Only Lasers are Indicated for Hair Loss

Hairmax Lumina 100% Medical Grade Lasers Evenly Spaced High density for complete coverage	iRestore Basic Mostly LED and very few Lasers Random Arrangement of Lasers Low Density of Lasers	iRestore Pro Mixed LED and Laser Random uneven Distribution of Lasers Low Density Laser Light

By contrast, a similar PubMed search for iRestore yields no studies specifically evaluating that brand. PubMed - iRestore

This shows that iRestore lacks published, independent clinical trials to validate its own device.iRestore’s marketing seems to rely on more general LLLT research rather than studies of their specific product.

• All of the HairMax studies use Medical Grade Lasers (e.g., 655 nm), with no LEDs. For example, a randomized, sham-controlled trial with the HairMax LaserComb showed a statistically significant increase in terminal hair density after 26 weeks using Laser Exclusively compared with sham devices, ie. non-laser or LED. Laser Vs Sham LED Device
• A systematic review of LLLT for androgenetic alopecia found that all of the rigorously designed trials involved laser-based devices exclusively. Low Level Laser Therapy (LLLT).

LEDs are used in “budget” devices because they are cheaper—not because they are as effective. Only lasers at specific wavelengths are able penetrate deep enough into the scalp to reach hair follicles, which originate in the fatty tissue layer several milimeters elow the surface of the scalp. LEDs just don't penetrate deep enough and are therefore ineffective for treating hair loss.



Top: Laser Light is collimated and focused, delivering nearly 100% of its energy directly into the target tissue.

Bottom: LED light scatters in all directions, so only about 5-6% of its energy actually reaches the target area. Therefore it is unable to penetrate skin to the follicle level.

This is why LED's, not lasers, are used for facial skin rejuvenation. If LEDs were truly effective for hair regrowth by stimulating follicles deeply, they would also promote excessive facial hair when used for skin rejuvenation. Since that isn’t a common side effect, it raises questions about whether the LED light actually reaches hair follicle depth in meaningful ways.

Another point: iRestore has claimed that lasers are “too narrow” to cover the entire scalp, which they use to justify including a large number of LEDs in their devices. However, HairMax devices circumvent this with an very high density of lasers that flood the entire scalp with penetrating therapeutic laser light. Hairmax Pro+2Ovid+2

Another feature that makes HairMax devices far superior to iRestore is they have specific designs for specific stages of hair loss different budgets. The smaller laser combs are ideal for treating smaller areas like the temples in both men and women, or a small crown area. The bands are excellent for thinning hair throughout the top, sides and back of the scalp. They are suitable for all stages of both women's and men's hair loss, but particularly appropriate for earlier stages of hair loss where the amount of remaining hair can hinder the ability of the light to reach the scalp. For early stages of hair loss the Lasers Bands are far superior to caps and helmuts.

Finally, regulatory context matters. Because the FDA (and Health Canada) often grants clearance based on “substantial equivalence” (i.e., similarity to a predicate device), companies can bring devices to market that mix lasers and LEDs without having to conduct their own long, costly clinical trials. This means that not all cleared devices have the same level of clinical validation and unfortunately, the FDA does not distinguish between LEDs and lasers. The iRestore FDA Clearance shows it received it's clearance based on a very inferior now discontinued device know as iGrow, which only had 17 lasers and a few LED's. Hear is the link to the iRestore FDA Clearance