Guide to Growing Hair Red light, hair loss, and the evidence

The site

Image credits

Product photographs come from each brand’s own pages, including shots of a hat being worn, and are shown for identification. They are cropped to a consistent frame. RedLight Innovation product photographs are used with the site owner’s rights to those images. They are not customers of this guide. The microscopy pairs are stills from RedLight Innovation’s own study page, labelled day 0 and day 90, shown at twice the original file size without sharpening.