Important info about oils. Sometimes a particular oil may not smell like before or the color & thickness of the oil is different. You should have a basic idea of whats happening. The fragrance or smell of an oil can change in two ways (1)change in the body chemistry of a person (2)maybe the product is of the lowest quality, I don't have any comment about that because I don't like, I don't wear and I don't sell low quality oils. Now about the body chemistry of individuals. The same fragrance can have a different effect on the same person at a different time. It depends on the weather, the mood of the person, what they eat or even if they smoke. It occurs especially if the person is a smoker. The tobacco smell comes out of his or her skin. So when the persons body is in either state, it can have a big effect on the way the oil will smell on the person at different times. For instance it can also happen if a person changes his or her eating habits. Maybe the person was eating lots of fruits and veggies and later began eating more fish and meats or vice versa. This can change the body chemistry. A change in the weather has a big effect on the fragrance. When the weather is cold, the density of the oil becomes low and the olfactory gland also gets numb, so it may feel the fragrance is weak. But, the same oil when the weather is hot, the density is higher, because the heat promotes the evaporation process faster. So it appears the fragrance is stronger. Watch out for sweat, even if hot weather spreads the fragrance quicker the sweat can change the characteristics of the fragrance. It depends on the persons body chemistry who is wearing it. The oil color depends on the weather, manufacturing season, and aging. If you keep the oil in direct sunlight, the color can change. The ultraviolet rays penetrate the oil and cause a chemical reaction which may darken the oil.