Sensitive skin is a general concept, defining change which is the sum of many factors subjective and objective. You can have sensitive skin acquired or genetically determined. Since most men shave, they can suffer from ailments caused by irritation. Daily ritual of removing facial hair, contributes to the loss of moisture and a protective layer of fat, the skin becomes painful to the touch, red and dry. A huge impact on irritation have also an excessive amount of solar radiation, dry indoor air, stress, pollution, lack of exercise, poor diet and inadequate care.
When you shave your skin "burns", you experience tightness, redness, inflammation of follicle. When all the toiletries give you a feeling of discomfort, burning and cause irritation, as well as if your skin reacts to temperature changes.