In fact, it is 7 layers strong because skin was designed to protect the body, rather than serve as an ornament draped over flesh and bone to increase sexual appeal. Young people, for instance, have beautiful skin because they have tough skin. Yes, their skin is thick and tough! This does not mean that it is unhealthy or unattractive as a result of too much swimming, sunbathing, or beauty care neglect. Instead, thick and tough skin means that it is well-structured, strong, and works as an effective barrier against bacteria invading the body from a topical source.