果皮類精油一定有光敏性？｜Are all citrus oils photosensitive?

十多年前剛開始學芳療時，老師常提醒我們：「果皮類精油有光敏性，要小心使用！」於是每次調油都格外謹慎，深怕用了柑橘類精油後曬到太陽，皮膚就會出問題。

但隨著持續進修、接觸不同老師和更多研究資料後，我發現原來：

果皮類精油 ≠ 一定有光敏性

而且不同精油的光敏風險其實差異很大。

常見例子：

甜橙精油：沒有光敏性

苦橙精油：有光敏性（皮膚使用濃度建議不超過1.25%）

柚子精油：沒有光敏性

佛手柑精油：光敏性最高（建議不超過0.4%）

佛手柑 FCF：沒有光敏性

萊姆精油（蒸餾）：沒有光敏性

萊姆精油（壓榨）：有光敏性（建議不超過0.7%）

檸檬精油：有光敏性（建議不超過2%）

葡萄柚精油：有光敏性（建議不超過4%）

蜜柑精油：光敏性相對低（建議不超過5%）

那麼，什麼是光敏性？

簡單來說，就是某些精油塗抹在皮膚後，再受到紫外線照射，可能引起紅腫、灼熱感、色素沉澱，嚴重時甚至像曬傷一樣。

所以真正需要關注的，不只是「有沒有光敏性」，而是：

精油的種類？

塗抹部位？

使用時間、濃度？

塗抹後會不會長時間曝曬？

很多人以為天然就等於安全，但天然不代表可以忽略使用規範，更重要的是了解精油。

學習芳療十多年，最大的體會不是考了多少張證書，而是明白到知識一直在更新。

當年學到的觀念未必錯，只是隨著研究進步，我們能看見更完整、更精準的答案。

芳療認證不是學習的終點，而是持續學習的起點。

保持開放的心態，不斷更新知識，才能讓自己和客人都用得更安全、更安心。

延伸閱讀：https://tisserandinstitute.org/phototoxicity-essential.../

One of the questions I’m asked most often is whether all citrus essential oils are photosensitive.

When I first started studying aromatherapy over 10 years ago, I was taught that citrus oils should always be used with caution because of photosensitivity. I remember being quite nervous whenever I included them in a blend!

As I continued learning over the years, I realized the answer isn’t that simple. Not all citrus oils are photosensitive, and even among those that are, the level of risk varies.

For example:

 Sweet Orange – Not photosensitive

 Bitter Orange - Photosensitive (max. 1.25%)

 Bergamot – Highly photosensitive (max. 0.4%)

 Bergamot FCF – Not photosensitive

 Lemon – Photosensitive (max. 2%)

 Lime distilled – Not photosensitive

 Lime expressed – Photosensitive (max. 0.7%)

Photosensitivity happens when certain essential oils on the skin react to UV exposure, which may cause redness, irritation, burning, or even sunburn-like reactions.

The key isn’t just whether an oil is photosensitive—it’s also about using the right dilution and understanding how to use it safely.

One of the biggest lessons I’ve learned over the years is that aromatherapy is always evolving. The more we learn, the more we realize that things aren’t always black and white.

A certification isn’t the end of learning—it’s just the beginning. Staying curious and keeping our knowledge up to date helps us make safer, more informed choices for ourselves and our client.

Further Reading:

https://tisserandinstitute.org/phototoxicity-essential.../