Hydrated skin will appear youthful and plump as the largest organ of the human body is skin, which is composed of up to 64% water. As a result dehydration will lead to wrinkles and breakouts - being partly due to the fact that Hyaluronic acid in the skin has not absorbed enough water so the protective barrier has weakened. Since the protective barrier isn’t guarded well, free radicals (like pollutants) can damage skin cells. For those with oily skin, dehydration may in fact encourage the production of excess sebum resulting in further breakouts. For those with dry skin – dehydration will only do more damage and cause further irritation to the skin.