Composite materials have proven to be an excellent solution for the replacement of tooth structure that had been irreversibly lost due to caries or trauma, as well as for the aesthetic improvement of teeth with unsatisfactory shape and colour. For this purpose, composite veneers are made, which are an ideal solution for minor corrections on the anterior teeth when we want to preserve as much tooth structure as possible while delaying more extensive prosthetic preparations. In order to faithfully reproduce the natural appearance and colour of a tooth, it is important to understand the external and internal structure of the teeth as well as the components of tooth colour. The colour depends on the thickness of the underlying dentin, the enamel, the position of the tooth, the environment, the lighting and the type of light that falls on the tooth, but most importantly the eye of the beholder. Colour is a subjective component and its selection should therefore be discussed with the patient. Over the years, numerous techniques and methods have been developed to create a polychromatic appearance of the teeth. The most popular and most commonly used are the fingertip technique and the silicone index technique, combined with a composite layering technique. In addition, it is important to accurately determine the indication for the application of composite veneers and fillings and to understand the advantages and limitations of the materials in relation to the clinical situation as well as the patient's lifestyle and habits.