Sensitive skin is more prone to react to stimuli to which normal skin has no reaction. It is a fragile skin, usually accompanied by feelings of discomfort, such as heat, tightness, redness or itching. This type of skin loses its barrier (or protective) function, making it easy for microorganisms and irritant substances to enter it, and increasing the possibility of having an infection and allergic reactions. It is a delicate skin that needs more care to fight dryness, roughness and its usual appearance. Sometimes, it is referred to as irritated skin instead of sensitive, but these terms are synonymous and there are no dermatological differences between them