If your skin is particularly sensitive or prone to ingrown hair, consider stepping back from that four, five or six-blade razor you are using. That may be the primary cause of those unsightly and uncomfortable red bumps.Remember those razor commercials where they show each subsequent blade lifting and cutting the hair follicle lower to give you that super-close shave? Well, they weren’t lying. The problem for those prone to ingrown hair is that it may work too well. After multiple cuts, the hair follicle is below the surface of your skin. As it grows back, it begins to curl back under before breaking the skin. The result: ingrown hairs.Nowadays, disposable/cartridge two and three-blade razors get the job done, providing a close shave and lasting at least a week. Give yourself a couple weeks with fewer blades and you’ll see the difference.