The skin is an extremely dynamic and functional organ, and as we have seen, skin cell regeneration is a continuous process. As years go by, cellular regeneration slows down, and as a consequence, skin tissue loses collagen and moisture. At the same time, the dermis becomes thinner and collagen thread primary structure is altered. As skin becomes less resilient, fine lines form. Simultaneously, the epidermis becomes thinner and less capable of regenerating, and is thus more susceptible to external factor influence. Sebaceous gland activity slows down, leaving the skin dry and less nourished. With time, the skin faces several changes that determine its ageing, such as a gradual reduction in skin tone, elasticity, and strength, the most visible consequence of which are wrinkles.