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Eczema Free Forever

Eczema Free Forever by Rachel Anderson

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p-Hydroxybenzoic acid OH OH

Hexyl-

Isodecyl-

Phenoxyethyl-paraben

Isodecyl-

Phenoxyethyl-paraben

Parabens are esters formed by p-hydroxybenzoic acid and an alcohol. They are largely used as biocides in cosmetics and toiletries, medicaments, or food. They have synergistic power with other biocides. Parabens can induce allergic contact dermatitis, mainly in chronic dermatitis and wounded skin.

Suggested Reading

Le Coz CJ (2004) Fiche d'éviction en cas d'hypersensibilité aux esters de l'acide para-hydroxybenzoïque (parahydroxybenzoates ou parabens). Ann Dermatol Venereol 131:309-310

315. Paraphenylenediamine

PPD, p-Phenylenediamine, 4-Phenylenediamine CAS Registry Number [106-50-3] NH2

PPD is a colorless compound oxidized by hydrogen peroxide in the presence of ammonia. It is then polymerized to a color by a coupling agent. Although a well-known allergen in hair dyes, PPD can be found as a cause of contact dermatitis in chin rest stains or in milk testers. It is also a marker of group sensitivity to para amino compounds such as benzocaine, some azo-dyes and some previous antibacterial sulphonamides.

Suggested Reading

Bork K (1993) Allergic contact dermatitis on a violinist's neck from paraphenylenediamine in a chin rest stain. Contact Dermatitis 28:250-251 Frosch Pj, Burrows D, Camarasa JG, Dooms-Goossens A, Ducombs G, Lahti A, Menne T, Rycroft RJG, Shaw S, White IR, Wilkinson JD (1993) Allergic reactions to a hairdresser's series: results from 9 European centres. Contact Dermatitis 28: 180-183 Guerra L, Tosti A, Bardazzi F, Pigatto P, Lisi P, Santucci B, Valsecchi R, Schena D,Angelini G, Sertoli A,Ayala F, Kokelj F (1992) Contact dermatitis in hairdressers: the Italian experience. Gruppo Italiano Ricerca Dermatiti da Contatto e Ambientali. Contact Dermatitis 26: 101-107 Le Coz CJ, Lefebvre C, Keller F, Grosshans E (2000) Allergic contact dermatitis caused by skin painting (pseudotattooing) with black henna, a mixture of henna and p-phenylenediamine and its derivatives. Arch Dermatol 136 : 1515-1517 Rebandel P, Rudzki E (1995) Occupational allergy to p-phenylenediamine in milk testers. Contact Dermatitis 33 : 138

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Allergic To Everything

Allergic To Everything

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