Perfuming

Ingredients with perfuming function are added to cosmetics to give it a pleasant smell or mask the natural aroma of the raw materials. This is important not only for perfumes, but also for shampoos, shower gels, creams, deodorants and hair products: a more comfortable fragrance makes the product more pleasant to use and affects the overall impression of texture and care, although by itself it does not moisturize the skin or restore hair. The FDA notes that scented ingredients are widely used in a wide variety of cosmetic products, and sometimes even used in products marked "odorless" if you need to hide the smell of other ingredients. (fda.gov)

Such substances primarily affect the skin and hair sensorially: they form the aromatic profile of the product, which is felt during application and for some time after it. At the same time, fragrance compositions can be complex mixtures of natural and synthetic molecules, so for sensitive skin they sometimes become a source of irritation or an individual reaction; the FDA separately indicates that some people may be sensitive to individual fragrance components. For this reason, the perfuming function refers more to the consumer properties of the formula than to the care action. (fda.gov)

Typical examples of such ingredients are Linalool and Limonene: these are common scented substances that help create floral, citrus, and fresh notes in cosmetics and perfumes. IFRA classifies such materials as ingredients used to give products a perfumery character, and Linalool is listed in industry lists as a component with a floral-fresh fragrance. That is why substances with this function are valued primarily for their smell and ability to improve the perception of the finished product. (ifrafragrance.org)