Sensitive to intolerant skin is not able to play its role of protective barrier against irritants. Make-up, make-up removing, pollution, external stress: the skin is weakened and tightened day in and day out. Sensitive skin expresses itself through feelings of heat, discomfort and widespread or localised redness. It becomes dehydrated easily and the ensuing dryness auto-maintains its fragility and leads to unpleasant feelings of tightness. Excessive skin sensitivity can be temporary or permanent.