Style is a key component in customizing Smile Makeup according to the sex, age and personality (SAP) of a person. The style component in Smile Makeup is generally guided by the social, cultural, fashion, beauty and glamour trends in a country or region, much of which continuously change with time. During the Smile Makeup process, a suitable smile style is selected based on the person’s sex, age and personality type, and the accompanying Smile Makeup Index is colour-coded depending on the basis on which a person wants his or her smile style modified (no change: green; change according to sex: yellow; change according to age: orange; change according to personality type: red)