Involvement of Type‐I and Type‐II Photodynamic Reactions in Photosensitization of Fragrance Ingredient 2‐acetonaphthone

2-Acetonaphthone (2-ACN) is a synthetic fragrance material used in various cosmetics as an adulterant. Due to its frequent use, we have conducted an in-depth study to understand the photosensitizing potential of 2-ACN. Results of this study illustrate that 2-ACN showed photodegradation in 4 h under ambient UV radiation (UVR) and sunlight exposure. It generated (1-25 µg mL