A variety of anti-aging products are advertised as solution to reverse [the perceived problem of] the appearance of aging. Many claims are made about these products, often showing "before vs. after" photographs and sometimes also flaunting testimonials (unverified anecdotes), but I've not encountered references for credible studies that back up the claims (even though the phrases "clinically proven" or "clinical trials" are sometimes used).
Here are a few examples (the third one is an anecdote/sales-pitch that recommends combining the first two products for best results; I also omitted tracking codes from all links to help maintain privacy):
JUVENEU - Instant Wrinkle Reducer
http://www.juveneu.com/ (this web site includes audio of a woman speaking)
Juveneu's advanced formula, contains some of the most effective anti-aging ingredients such as Resveratrol, DMAE, Matryxil 3000 and an exclusive blend of peptides that are clinically proven to turn back the natural effects of the aging process at the cellular level, Producing Astounding Results.
PureCollagenX.com | Anti-Aging Facial Serum
[Heading: Collagen and Wrinkles]
Collagen is a long, fibrous structural protein that is wound together in a tight helix. This helix is what gives collagen, and your skin, such great strength and elasticity. Numerous helixes bind together to form collagen fibers, which are woven together in our bodies like threads in fabric to form a framework for new cells to grow. Without these fibers, the skin just cannot hold its shape, making it look saggy and wrinkled.
Don't Break the Bank: A Mom's Trick to a Wrinkle FREE Face
["Before (wrinkly face)" and "After (smooth face)" pictures are included on the web page.]
Emily started to notice several changes within weeks. The picture on the left was taken around the third week after she started using Juveneu and Pure Collagen regularly. She used both Juveneu and Pure Collagen only once a day in the morning.
Her wrinkles are smoothed out, her eye lines are gone and her skin glows. Her skin continues to get firmer and firmer. In addition to her renewed radiant skin, Emily experienced a significant increase in energy because of the added benefits of the antioxidant Argan Oil.
I'm suspicious about these claims because there don't appear to be references to credible scientific studies, and seemingly mysterious/peculiar/unusual phrases like "exclusive blend of peptides" and "tight helix" are used.
Are the claims about how these products work accurate, and are these products effective for significantly reducing or eliminating wrinkles in human skin?