Why do some people have more sensitive skin than others?

Skin sensitivity is shaped by both the skin itself and the nerves underneath it. Some people have a weaker skin barrier, meaning moisture escapes more easily and irritants enter more readily. Genetics can influence how reactive the skin is, while eczema, allergies, and frequent irritation can make sensitivity worse. Thin skin in areas like the face and neck often feels more reactive than thicker skin on the palms or soles. Temperature, stress, and certain skincare ingredients can also change how sensitive the skin feels from day to day.