Dolce & Gabbana's Light Blue is the fragrance most people picture when they think of Mediterranean citrus, and its longevity as a bestseller is not an accident.

The opening is Sicilian lemon and green apple - sharp and slightly bitter rather than sweet, which matters more here than in a cooler climate. Sweet fragrances amplify in heat and turn heavy; a dry citrus stays crisp.

Underneath sit white rose and cedar, and the cedar is what gives the fragrance a base to sit on rather than evaporating within the hour, which is the usual fate of bright citrus compositions.

As an Eau de Toilette it is lighter in concentration than an EDP, which suits its character - this is meant to be re-sprayed through a hot day rather than applied once and endured.

Best in spring and summer, in daylight. Apply to pulse points and reapply in the afternoon; an EDT citrus is designed for exactly that rather than expected to last twelve hours.