Hair coloring by lay people may not be sufficiently accurate. Hair that has been damaged by excessive exposure to chemicals is considered "over-processed". This results in dry, rough and fragile hair. In extreme cases, the hair can be so damaged that it breaks off entirely. The main cases of hair breakage are: Lack of moisture and oils, poor diet, stress, over processing or illness. Skin and fingernails are made of a similar type of keratinized protein as hair. That means that drips, slips and extra hair tint around the hairline can result in patches of discolored skin. This is more common with
Artificial nails can also be a risk when nails are applied by a disreputable nail salon that doesn't follow sanitary practices. There is concern over the flammability of ingredients used to make acrylic nails. It is suggested that they be kept at a distance from hair straighteners, dryers or curling irons, as well as from heat and flames when cooking, in order to avoid potential flame hazards. From an occupational health standpoint, there could be hazards to nail salon workers who are exposed to the chemical fumes from artificial nails during their entire work shift. Ethyl methacrylate can be used for artificial