This could be great if you're just looking for a small bottle, given its 20-ml volume. If you're having trouble picking a fragrance, this one from Acqua Di Parma could be what you'
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Peacock Bazaar
Acqua di Parma Colonia Pura Eau de Cologne 180ml, 100ml, 50ml & 20ml Spray - Peacock Bazaar - 20ml