Fragrance chemicals in personal care and household products release volatile organic compounds (VOCs) into indoor air that can trigger respiratory issues, headaches, asthma attacks, and allergic reactions with repeated exposure. The study found these effects occur in vulnerable populations and may affect the endocrine, immune, and nervous systems—and the problem is that fragrance ingredients aren't always disclosed on labels, so you may not know what you're breathing in.

This was a critical review of existing research on fragrance VOCs and their health impacts, examining both synthetic fragrances and natural essential oils used in beauty and household products.

Funding not disclosed in abstract