One of the main causes of dermatitis is wet working. You and your team are more at risk of developing it if you have your hands in contact with water for long periods of time in a day, over 2 hours for example. Or if your hands are wet several times a day, say if you shampoo 10 clients a day or more. This is why staff that spend their time doing a lot of the washing are more at risk.
The other main cause of dermatitis is contact with the chemicals in hairdressing products, when shampooing, colouring or bleaching, or in the products you use for cleaning up.
There are several ways that your hands can come into contact with water and products: