What can cause razor bumps or pseudo folliculitis?

Razor bumps, also known as pseudo folliculitis, occur primarily when hair that is shaved becomes trapped beneath the skin's surface, leading to inflammation and visible bumps. Shaving too closely can irritate the hair follicles, provoking this condition. When the hair is cut at an angle or too short, it is more likely to curl back into the skin during regrowth, increasing the likelihood of ingrown hairs and causing irritation. This is particularly common in individuals with curly hair textures, where the hair is more prone to curling inward.

Using too much styling product, applying hair dye, or using a dull razor can lead to other issues like scalp irritation, allergic reactions, or nicks and cuts. However, they do not directly contribute to the development of razor bumps in the same manner as shaving too closely can, which is the primary factor leading to the entrapment of the hair follicles and subsequent inflammation. Understanding this connection is vital for effective skin care and minimizing the occurrence of these bumps after shaving.