Lipstick and fragrances: different types of cosmetics and different project aims achived via sensory

Make-up products and perfumes represent two particular categories of cosmetics in which the development / efficacy studies are strongly dependent on the subjective evaluation. The cosmetic effect is not directly related to changes of biological skin parameters like hydration, lipids content or TEWL but is the result of the integration between technical aspects of the products and sensorial perceptions. As a consequence, make-up products and perfumes are usually tested by experienced technical evaluators like the ´nose´(e.g. the perfumer), who is a person with very high olfactory sensibility, or by means of consumer tests in which the product is evaluated according to subjective hedonic criteria. Moreover, this types of studies, while providing many information about product performances, are not sufficiently objective and lack in reproducibility. This is especially true when the evaluations are made by ´experts´. The objective evaluation of lipsticks and alcoholic fragrances, is possible by using discriminative and descriptive sensory techniques.