SKINS intolerant: the skin appears uncomfortable by tuggings, burns, the picotements, the blushes. The skin is irritated after aggression (irritant pollution, climate, effort, care) SKINS hypersensitive and allergies: the skin becomes inconfort insuportable and permanent; prurit and the intense sensitivity of burns, the redness, drought, exfoliation, sometimes leveled the appearance of bubbles, erythema, edema, eczema, or urticaria standard … LEATHER AND LEATHER very dry Atop the skin is dry with acute, is frequently the source of tuggings and discomfort, the pores are invisible. the skin can be dry for lack of sebum, or water in the layer of the cornea and loss hydrolipidic film, or a genetically dry skin, eczema a atopic. Efforts will be if there is itchings or eczema (bubbles infiltration). Aging skin is seen when the skin fades on and homogenity of the dye on. There is then increase in wrinkles and the appearance of ridules and pigmentary points. The redness appears on the skin and that leaves the exposure through the network of capillary vessels. The expansion of entraine dermal vessel capillaries of widespread redness (flushing) and redness spread localized redness (spots). (or red) is fugacious and later with the number of assaults (climate changes, big air, emotion, stress, diet flavored …), stains are an anomaly (often congenital) that causes the localized redness and permanent. A skin couperosee is often prone to redness. Sunscreen is the capital, particularly for leather intolerant with the sun and skin sensitive to sunlight. There are always hides that 'the Sunburst, that little bronze and badly or well, that even after a tan, Sunburst intra '. The sensitive skin burns from the sun intra sometimes the light ', the beginning of exposure, developing protective bronze, then they adapt to the sun. During excessive sun exposure, UV has harmful effects on the level of the skin and derms, 'the Sunburst, burns, premature aging. A long-term deterioration of genetics and development of skin cancers.