May 2023 in “Australasian Journal of Dermatology” Various substances, including cosmetic sponges, vein glue, chai tea, skincare products, and medicaments, can cause allergic contact dermatitis, and healthcare workers often react to N95 masks.
November 2013 in “Annales de Dermatologie et de Vénéréologie” Cinnamon essential oil can cause severe or unusual skin reactions, with cinnamaldehyde being the main allergen.
November 2024 in “Dermatitis” Men's personal care products often cause allergic skin reactions.
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December 2020 in “Dermatitis” Ethnic hair products contain different allergens than nonethnic ones, with fragrance being the most common in ethnic products.
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July 2022 in “PubMed” Hair dyes, shampoos, and conditioners often cause scalp allergies due to common allergens like p-phenylenediamine and nickel.