| Aroma Crystals | Essential Oils | Aroma Salts |
| Quality of Perfume | Aroma does not change. | Aroma is likely to change. | Aroma is somewhat likely to change and take on a rotten smell. |
| Convenience in Use | Easy to use and store | Inconvenient | Similar to Aroma Crystals |
| Safe-keeping | Even if they break, they will not easily spill, nor will the aroma change. | Easy to spill and aroma changes. | Do not spill easily, but aroma changes when they do. |
| Appearance | Have a neat, hexagonal shape | Look like so many other common household items. | Have a sloppy, irregular shape |
| Ease of Use | Inhalation: You only need to open the lid. | Inhalation: You must use a burner. | Similar to Aroma Crystals |
| Suitability for use while bathing | Excellent, since they are solid. Measuring a right amount is also simple. | It is difficult to use while bathing, and measurement is difficult. | Similar to Aroma Crystals |
| Natural Authenticity | 100% natural product | Similar to Aroma Crystals | Artificial water repellents are added. |
| Usefulness when finished as a perfume | Still wonderful for massage | None | Similar to Aroma Crystals |