Guerlain's fragrance Idylle Duet for Women was introduced in 2011. What is the scent of Idylle Duet? It's an aroma with a mix of aromatic flower, citrus, and green scented tones that will leave you feeling fresh, sensuous, and romantic. When you examine it more closely after it has been applied, you'll detect a lingering quality of gentler fragranced woody, rose, and fresh hints that conceal an essence of relaxing, elevating, and gratifying sensations.