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 and his brother, Tom, patented a successful version and started the company Patti Nails. Fred Slack used his dental equipment and chemicals to replace his natural nail, but over time the process has significantly changed. In the late 20th century, artificial nails for women became widely popular all over the world. In today's time there are even nail styling competitions. Judges of these nail competitions look for consistency from nail to nail. They also judge whether or not the nails complement the model's hands. If the nails are beautiful, but too long for the model's hands, the judge will count