for Teachers for Schools for Companies. Sulfur is a major mineral of the body that is part of certain amino acids and helps with many bodily processes. Learn what happens if you do not get enough of the mineral through your diet and what happens, if anything, when too much is ingested in this lesson.
Special-effect contacts (also called theatrical contact lenses, costume contacts and gothic contact lenses) are popular for Halloween and costume parties. These lenses typically are sold separately in individual glass vials and can range in price from $50 to more than $200 per lens.
A 12-month supply of extended wear silicone hydrogel contacts typically will cost $250 to $300. These lenses usually cost $50 to $70 for a box of six lenses, and you will need at least four or five boxes during a 12-month period (especially if you lose or damage some lenses, or wear them for less than 30 days).