C: ''The scent pyramid describes how a perfume evolves over time. It’s divided into three layers: Top, Heart, Base.''
D: ''In the Top notes, you will find raw materials which are volatile and will stay from 1 to 5 minutes on your skin. Heart notes are the body of the fragrance, built around flowers or spices and will stay until few hours on your skin. And finally, Base notes are the foundation of the fragrance, the notes which will stay for several hours on your skin or fabrics, and are ususally made from woods, musk and resins. It’s the base notes that will help the fragrance to have a good sillage. You have to image the sillage like olfactory imprint you let behind you after visiting a place.
C: ''A perfume with strong sillage will be noticeable from a distance as you walk by, while one with soft sillage stays closer to the skin.''