“Hydration is a combination of what happens inside and outside the body,” Dr Pretorius said. “A lightweight moisturiser helps reduce water loss from the skin,” Dr Pretorius said. In fact, it is one of the body’s natural cooling mechanisms,” Dr Pretorius said. Dr Pretorius said the key to healthy skin this summer was consistency rather than an overflowing bathroom cabinet. It is about protecting the skin barrier, preventing unnecessary damage and maintaining consistent daily habits.