1. Stay out of the sun.
   Use sunscreen every day.
2. Stay out of the sun and use sunscreen every day.

At this point, it's hard not to know this one ... ninety percent of skin damage is caused by the sun. And keep that SPF above 30!

1. Darker skin has more natural oil, which helps prevent wrinkles.
   The darker color camouflages the wrinkles.
2. Darker skin has more melanin, which offers protection from the sun.

Melanin is the key here. Skin with more melanin doesn't get as sun-damaged.

1. Antioxidants reverse the aging process in skin cells.
   Antioxidants protect the skin from free radicals.
2. Antioxidants block the sun's rays.

Antioxidants may protect the skin from free radicals, which can be produced when the sun's rays break down in a polluted environment. Free radicals cause cell destruction and could accelerate the aging process -- as well as cause cancer.

1. A, C and E
   A, B and C
2. B, C and E

Vitamins A, C and E have antioxidant properties.

1. vitamin A
   vitamin C
2. vitamin E

Topical products containing vitamin C have been shown to help with collagen synthesis.

1. DMAE
   copper peptide
2. hyaluronic acid

The villagers' diet was unusually heavy on root vegetables, which are a good source of hyaluronic acid.

1. hydrabrasion and chemical peels
   dermabrasion and chemical peels
2. dermabrasion and alpha-hydroxy acid treatments

Dermabrasion and chemical peels are the two most common skin-resurfacing procedures. Dermabrasion scrapes off layers of skin, and chemical peels dissolve them.

1. Smoking destroys collagen.
   Smoking slows the skin's oil production.
2. Cigarette smoke dries out the skin.

This one is a bit complicated, but true. A 2007 dermatological study showed that smoking activates a gene that controls an enzyme that destroys collagen.

1. antioxidants
   retinoids
2. avobenzone

Studies have shown that topical retinoids (one example is Retin-A) do reduce wrinkles and reverse the effects of sun damage.

1. alpha-hydroxy acid
   hydroquinone
2. salicylic acid

Bleaching creams and lightening agents contain hydroquinone -- you can get them over the counter or with a prescription.