Beyond physical health, cosmetics can help to improve our mood, enhance our appearance and boost our self-esteem. They can also help to exhibit personal style and, as such, are an important means of social expression. The use of cosmetics to improve our appearance can affect our self-perception. The use of cosmetics to improve our appearance can affect our self-perception. When we feel good, our self-esteem increases and our performance improves which favourably affects what others think of us, and how they behave towards us. In the same way, negative feelings about our appearance can trigger self-doubt that leads to lower self-esteem, confidence and performance.