There are lots of comments made about cold sniff and people judging a fragrance oil from the bottle or the wax melt from the packet. By doing this, whilst you can get some idea of the fragnce, you don't get to appreciate the whole fragrance.
We describe the top, mid and base notes of our fragrances. Whilst you may not be able to determine individual fragrance notes due to them blending together, here are a few words on the three components.
Top notes are made of scents with the smallest mollecular size and are the most volatile so are released at the lowest temperature. These tend to be the clean, fresh, citrus type fragrances and give the first impression of the fragrance.
Mid notes (known as the heart) are made of scents with a larger molecular size and are more rounded than the top notes. In a melt, these notes may not become prominent until burned for 15 minutes. The mid notes form a large percentage of the overall fragrance.
Base notes come from scents with the largest mollecular size and are the fragrances that hang around when the melt is left to cool. These are the soothing notes (musk, wood, patchouli etc.) and round the fragrance off, adding another layer of complexity to the oil.