The French wine fair organiser interviewed 20 people aged between 20 and 25 who were classed as occasional wine drinkers in the UK, France, Belgium, America and Japan.
In the UK, Vinexpo found the target group was showing increased interest in wine and more of them were drinking it than the same age group 10 years ago.
But respondents also said they find the category confusing and would like to see clearer indications of grape variety on the label.
They said they prefer traditional packaging, but they also like branded wines, although they say they don't want the brands to obviously target young drinkers.
Tesco wine buyer Kevan Smith took part in a round-table discussion following the release of the research.
He said it was drinkers aged between 20 and 25 who had contributed to the sales growth of wines in the past few years.
He said: "We have seen six years of exceptional growth and it's this group of people who have slowly evolved and come out into the market.
"That is why we have seen this flattening now, but I believe that there are going to be generations following on," he added.