What is it? StriVectin-SD is a cream designed to eradicate stretch marks, but it's now being promoted especially as a wrinkle buster and the maker boasts that it's 'better than Botox'. US and European women reportedly lather it on from head to toe. How did it morph into a face cream? Supposedly, a relative of an employee accidentally applied the cream to her face (they get samples without instructions) and noticed an improvement in her skin texture. But manufacturer Klein-Becker says it always knew the cream had the potential to smooth crows feet and face wrinkles. Louis Rinaldi, managing director of product acquisitions, says trials were already being conducted before the story about the relative gained currency. 'The ingredients repair and replenish the molecules that make skin healthy and young.' Tests showed that the cream also thickened skin 1.6 times faster than retinol, without irritation or sun sensitivity. What's so good about it? The cream contains three botanical ingredients, Rinaldi says. One duplicates the natural amino acid found under the skin that promotes the production of collagen, a protein used by skin, tendon, bone, cartilage and connective tissue. How popular is it? StriVectin-SD is now sold in 24 countries. In the US, it's available from about 4,000 stores. In France, sales are expected to reach US$65 million this year. How do I use it? Smear it on stretch marks or apply a small amount to the face, twice a day. You can use a moisturiser as well. Rinaldi says you should see a difference in 28 days. What do Hong Kong women say? Karen Page, 33, says she started using it on her face about eight months ago. 'My skin gets clogged and is bumpy. Since using the cream, I've noticed ... it's much smoother and looks better.' How much is it, and where can I get it? The 6oz pack costs $1,550 and a new 1.3oz eye cream costs $650. Available from Harvey Nichols and Lane Crawford.