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Latest published research we're tracking

The newest skincare and haircare papers from PubMed, linked to the ingredients we decode. Summaries are the authors' own abstracts — we excerpt, attribute, and link out to the source.

Showing research linked to Toluene-2,5-Diamine (view profile)

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2 papers under Contact allergy

Contact allergy

Patterns of Sensitization and Cross-Reactivity in Hair Dye Allergy: An 18-Year Tertiary-Center Experience from Greece.

Dermatitis : contact, atopic, occupational, drug · 2026

<u><b><i>Abstracts:</i></b></u> <u><b><i>Background:</i></b></u> Hair dye-related allergic contact dermatitis (ACD) is a common problem among both consumers and professionals. The main sensitizers are aromatic amines such as para-phenylenediamine (PPD) and toluene-2,5-diamine (TDA), which can also cross-react with chemically related compounds.<u><b><i>Objective:</i></b></u> To analyze patch-test… Read on PubMed →

Contact allergy

Toluene-2,5-Diamine Sulfate: The 2025 American Contact Dermatitis Society Allergen of the Year.

Cutis · 2025

The American Contact Dermatitis Society named toluene-2,5-diamine sulfate (PTDS) the 2025 Allergen of the Year. Toluene-2,5-diamine sulfate is widely used as an alternative to para-phenylenediamine (PPD) in hair dyes but is itself a potent and likely underreported contact allergen. Cross-reactivity with PPD is common. Allergic contact dermatitis to PTDS manifests similarly to PPD reactions and… Read on PubMed →

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