Musk molecules are aroma chemicals used to add softness, warmth and lasting character to a fragrance. Depending on the material, they may smell clean, powdery, creamy, sweet, skin-like, fruity or softly animalic. Perfumers use musk molecules to enrich the dry-down, smooth transitions and give a composition greater volume, cohesion and tenacity. They work especially well with floral, woody, amber and fruity notes, while some can form a complete modern musk accord. Musk materials vary greatly in strength and character, making gradual evaluation and careful dosing essential.