Allergen of the Year Timeline

The following list, selected by the American Contact Dermatitis Society,
is available for prescription unless otherwise stated.

• 2026 - Benzyl Alcohol
• 2025 - Toluene-2,5-diamine sulfate (PTDS)
• 2024 - Sulfites
• 2023 – Lanolin
• 2022 – Aluminium
• 2021 – Acetophenone Azine (not currently available for prescription)
• 2020 – Isobornyl Acrylate
• 2019 – Parabens (Non) Allergen
• 2018 – Propylene Glycol
• 2017 – Alkyl Glucosides
• 2016 – Cobalt
• 2015 – Formaldehyde
• 2014 – Benzophenone
• 2013 – Methylisothiazolinone
• 2012 – Acrylates (2012)
• 2011 – Dimethyl Fumarate
• 2010 – Neomycin
• 2009 – Mixed Dialkylthiourea
• 2008 – Nickel
• 2007 – Fragrance
• 2006 – Para-phenylenediamine
• 2005 – Corticosteroids
• 2004 – Cocamidopropyl Betaine
• 2003 – Bacitracin
• 2002 – Thimerosal
• 2001 – Gold
• 2000 – Disperse Blue Dyes