Answers are grounded in this paper and cite their sources.
Prospective cohort study shows hexyl-2,5-diaminobenzoate is a safe alternative for patients with contact dermatitis, indicating its potential for wider cosmetic use.
PPD6 may be a hypoallergenic alternative for permanent dark hair dye in patients with contact allergy to PPD.
No takes yet. Share an insight, caveat, or question.
Venkatesan et al. (2026) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: