the official age for anti-wrinke creams

Last month I did a lot of reading and one of the books I read was about three young working girls who have come to the big city to work, earn some money and find someone to love. What was so interesting is that the main character states that 28 is the official age of women that marketers target anti-wrinkle creams. I found that very interesting since a lot of women buy wrinkle cream based on advertisements in fashion magazines as well as based on their friends and colleagues usage of these creams. This is a new trend, of marketing these products at such a young audience and it seems to be working out quite well.