Dental caries is one of the most prevalent chronic diseases in the India, predominantly affecting children. Despite the decline seen in the past several decades, caries remains a major public health challenge, as the caries prevalence rate in children and young adults remains high, affecting over 60– 65% of individuals entering adulthood. The early enamel lesions are mainly characterized by loss of mineral beneath an intact surface layer, and such lesions appear as white spots because of the increased porosity within the body of the lesion. The new concept called resin infiltration (ICON®) was developed to address the retention issues and enhanced decay prevention on the smooth surfaces. This case report describes a technique used to treat smooth surface white spot lesions microinvasively. It is based on the infiltration of an initial enamel caries lesion with low–viscosity light–curing resins called infiltrants.