When it comes to choosing which cosmetics to buy, consumers typically identify the smell as the factor that is most important to them. When uncovered, the fatty acids, oils, and surfactants that are frequently included in cosmetic formulations can all contribute to the production of odours that are unpleasant. Essential oils are used in a wide variety of cosmetic products because, in addition to the fragrant contributions they make, they serve as preservatives, active agents, and additions that are helpful to the skin. In addition, the growing demand for natural components has significantly contributed to the revival of interest in plant derivatives, particularly essential oils, in the industries of cosmetics and health. Popular cosmetic companies have been forced to promote natural fragrances and pick for minimally processed natural materials as a result of the potential health concerns related with artificial smell compounds, which are major components of cosmetics. As a result of this pressure, the cosmetic industry as a whole has moved towards natural fragrances. Some of the most highly regarded essential oils that are utilised in the creation of fragrances include citrus, lavender, eucalyptus, tea tree, and other flower oils. Some of the most highly prized scent components that are utilised in the creation of various cosmetics include linalool, geraniol, limonene, citronellol, and citral. In the fields of cosmetics and cosmeceuticals, essential oils have a wide variety of applications, including use as a source of natural fragrances. The purpose of this review was to shed light on those applications. Origins of essential oils, commercial viability of essential oils, chemical makeup of essential oils, fragrance classification, olfactory character of essential oils, authenticity, and safety will all receive the attention they deserve.