Brow lamination is a beauty treatment that involves the use of a chemical solution to reshape and set brow hairs in a desired direction. It can be used to achieve a fuller, more defined brow shape that lasts for several weeks. The process involves brushing a solution onto the brows and using a special tool to comb the hairs into place, followed by a neutralizer to set the shape. It's a popular alternative to microblading or other semi-permanent brow treatments, as it doesn't involve any cutting or tattooing of the skin.