Evaluating the fragrance quality and durability of scented candles requires comprehensive consideration of multiple factors, including the selection of fragrance materials, candle formula, burning process and environmental impact. Here are some common evaluation methods:
1. Intensity and uniformity of fragrance
Fragrance intensity: evaluate the intensity of the fragrance when the scented candle is lit. The fragrance should not be too irritating or too light, and should have a moderate intensity to ensure that the whole room is scented.
Fragrance uniformity: whether the fragrance is released evenly during the burning process of the candle, avoiding one part of the fragrance being too strong and another part being too light, ensuring that the fragrance is continuous and stable.
2. Fragrance level and complexity
High-quality scented candles usually use a multi-level fragrance design, similar to the top, middle and base notes in perfume. Evaluate whether the fragrance changes in depth and whether it can present different levels of fragrance over time.
Confirm whether the fragrance is pure and not mixed with unpleasant odors (such as chemical smells or irritating smells caused by inferior fragrances).
3. Persistence of scent
Scent retention during burning time: Evaluate whether the scent can last after the candle is lit for a period of time. If the scent disappears quickly during the burning process of the candle, it may mean that the fragrance of the candle is not strong enough or the quality of the candle is poor.
Scent after cooling: Whether the scent will continue to diffuse in the room or leave a lingering fragrance even after the candle is extinguished.
4. Scent release during burning
Observe the burning process of scented candles at different stages to see if they can release the scent stably and continuously. Whether the burning speed of the candle is moderate. Too fast burning may cause the scent to dissipate too quickly, while too slow burning may cause the candle to not melt completely.
5. Influence of candle material
Candle material: Evaluate the effect of the wax used (such as soy wax, beeswax or paraffin) on the scent. Different wax materials have different effects on the release of scent. Soy wax usually releases the scent more evenly, while beeswax has a natural sweet smell.
Type of fragrance: Natural fragrances (such as essential oils) usually provide a more lasting and natural scent, while synthetic fragrances may bring a shorter scent and may cause allergic reactions in some people.
6. Impact of environmental factors
Scented candles perform differently in different environments, such as temperature, humidity, and air flow, which can affect the spread of fragrance. Testing the fragrance persistence of scented candles in rooms of different sizes or with or without air conditioning can more comprehensively evaluate their performance.