The second rule is: perfume lives in time; it has its youth, its maturity, and its old age. And only if it gives off a scent equally pleasant at all three different stages of its life, can it be called successful. How often have we not discovered that a mixture that smelled delightfully fresh when first tested, after a brief interval was more like rotten fruit, and finally reeked of nothing but the pure civet we had used too much of. Utmost caution with the civet! One drop too much brings catastrophe.
