The ingrown hair is a hair trapped under the skin that continues to grow by deviating from its usual path and without being able to pierce the skin. It forms from a hair that is shaved too short, or conversely from a hair that is too long and remains in the subepidermal position, giving way to red dots and usually visible on the surface of the skin. Ingrown hair is frequently accompa... https://www.traitement-laser-medical.com/poil-sous-peau-definition-pilosite-incarne-maillot-visage/