One reason sharks are disappearing from our
oceans is that their liver oil, otherwise labeled squalene,
is used in moisturizers, deodorants, suntan lotion,
lip balms, lipsticks and other cosmetics. It is also used
in vaccines and even high-grade machine oil. Health
food stores sell squalene and shark cartilage (chondroitin)
to people who think it protects against a variety of
conditions including arthritis, shingles, rheumatism,
hemorrhoids, psoriasis and cancer. There is virtually no
evidence it works for any of these conditions.
The highest return of squalene comes from the
livers of deep-sea sharks such as Gulper sharks, kitefin
sharks, Portuguese dogfish and chimaeras. These sharks are intensively fished, yet because of their life
history (long-lived, slow-growing and slow-reproducing
animals), they are unable to respond to the level of
fishing pressure placed on them -- many are now listed
on the IUCN Red List of threatened species.
There are alternatives. Squalene can be produced
synthetically or from vegetable sources. Many large
cosmetic manufacturers have committed to moving
over to non-shark squalene, and so will state that it is
'vegetable based' or from 'vegetable origins.' To save
sharks, look at the label before you buy.
(Source: www.sharktrust.org)