No beauty range is complete without a serum these days, but do you really need one? Sometimes it's hard enough deciding which moisturiser to buy, let alone consider adding in another step to your beauty routine. I think they can deliver results. For example, they can work wonders when your skin looks dull and lacklustre or if it is going through a sensitive phase. Try one too at the change of seasons when the condition of your skin is influenced by the changing weather. The key is to choose a serum according to your needs.