The subject of the invention is the use of a sweetener such as sucralose or an extract of Stevia, for masking the bitterness of hydrophilic organic UV-screening agents in cosmetic or dermatological compositions.The sweetener may advantageously be used in combination with a mint aroma or a salt, for example sodium chloride. This mixture of sweetener with a second gustatory agent makes it possible to mask the bitterness of the hydrophilic UV-screening agent without changing the nature of the fragrance or the colour of the composition.