PTD. What is It?
“Toluene-2,5-Diamine and Toluene-2,5-Diamine Sulfate are used as ingredients in the formulation of permanent hair dyes, colors and tints. Toluene-3,4-Diamine may also be used in hair dye products.”1 This permanent hair color chemical has also been called para-toluenediamine (PTD) or p-toluenediamine.Why Worry About PTD?
After extensive scientific research, the European Commission (Health and Consumer Safety) concluded that the use of toluene-2,5-diamine cannot be considered safe for hair coloring or hair shaft . The National Allergy Research Centre in Denmark concluded that hair color dye users need more protection and a ‘preventative strategy’ to reduce cases of severe allergic contact dermatitis.“The SCCP (Scientific Committee on Consumer Products) is of the opinion that the use of toluene-2,5-diamine cannot be considered safe based on the available data. This conclusion may be re-evaluated if human toxicokinetic data were to become available in which dosages used more closely approximate the intended use of the substance.
- Toluene-2,5-diamine is an extremely potent skin sensitizer.
- Clarification must be given on the myocyte degeneration in the dose range finding study of the 90 day study.
- Toluene-2,5-diamine sulfate itself has no mutagenic potential in vivo.
National Allergy Research Centre Abstract
“Colouring of hair can cause severe allergic contact dermatitis. The most frequently reported hair dye allergens are p-phenylenediamine (PPD) and toluene-2,5-diamine, which are included in, respectively, the patch test standard series and the hairdressers series. The aim of the present study was to identify dye precursors and couplers in hair dyeing products causing clinical hair dye dermatitis and to compare the data with the contents of these compounds in a randomly selected set of similar products… Hair dye allergy may cause severe clinical reactions, and the current regulation is insufficient in protection of the users. A preventive strategy is needed.”2
Are There Safe Alternatives to PTD in Hair Dye?
Mother Nature contains vegetables, herbs, flowers and other plants that provide an alternative, safe solution. Natural botanicals have been used since ancient times for an effective natural hair dye . In modern times, more research was essential for a quicker application method that needed to be created from the gifts found in nature. The FDA has suggested that a safe alternative to synthetic hair dye is all-natural henna as a natural hair dye.Natural Hair Dye Alternative to Chemical Hair Dye
There are many products marketed to consumers that are claimed to be “all-natural”, however, upon closer examination these claims simply are not true. Many other all-natural hair color products have been disappointing to consumers worldwide, due to unsatisfactory performance. This serious issue led to much more extensive research and testing and the development of an exquisitely unique natural hair dye formula found totally in Mother Nature. This truly natural hair dye is marketed by Saba Botanical of USA under the brand name of Lustrous Henna®.1Scientific Committee on Consumer Products
2National Allergy Research Centre, Department of Dermatology, University of Copenhagen Gentofte Hospital, Denmark
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