Table 1. Recommendation to minimize risk of contact dermatitis in hairdressers.

PPD: Para-phenylenediamine

Steps	Measures
1.	Substitute allergens with safe alternatives	Allergens	Alternatives
		PPD containing hair dye	Use PPD-free alternative hair dye such as monoethanolamine based hair dye, Para-toluenediamine (PTD) containing hair dye  or 2-methoxymethyl (ME)-PPD hair dye
		Persulfates in bleaching powders	Use persulfate-free bleaching creams
		Ammonium thioglycolate in hair perm products	Use cysteamine containing hair perm products
2.	Engineering measures to limit exposure such as ensuring a well-ventilated room for mixing hair products.
3.	Administrative measures and policies to minimize exposure to allergens such as distributing the wet work evenly among employees to reduce the individual’s exposure to wet work.
4.	Use of personal protective equipment such as wearing gloves at work.