In Vietnam’s fast-growing consumer landscape, brands are becoming increasingly reliant on social media and digital platforms to track trends, plan product launches, and craft marketing strategies. TikTok videos, Facebook groups, YouTube reviews, and Instagram stories are now treated as vital data sources. Consumers appear eager to share their opinions publicly, engaging with products through unboxings, haul reviews, “get ready with me” clips, and more. This creates the impression that the voice of the market is now louder, clearer, and more real-time than ever before. But as digital access widens, a new gap is emerging—one that quietly divides what Vietnamese shoppers say online from what they actually do in-store.

In market research, your insights are only as good as the people you talk to. You can have a flawless questionnaire, a great moderator, and top-tier analysis—but if your respondents aren’t real, genuine, and qualified, your entire study is at risk.

Unfortunately, fake respondents—people who misrepresent themselves, cheat screeners, or participate solely for incentives—are more common than you might think. Especially in urban studies with open recruitment, online panels, or high incentives, the risk increases dramatically.

So how do you spot them? And more importantly, how do you stop them before their data damages your conclusions?

Quantitative research is all about precision. It seeks to capture objective data that can be measured, analyzed, and transformed into clear, actionable insights. But before any number appears in a spreadsheet, it starts with one thing: a question.

Crafting the right questions isn’t just about wording. It’s about purpose, psychology, structure, and logic. A great questionnaire can uncover market trends, segment audiences, test hypotheses, or validate assumptions. A poor one? It can lead you to completely wrong conclusions, waste time, and misguide strategic decisions.

So, how do you make sure you’re asking the right questions? Let’s break it down.

Walk into a drugstore in Hanoi or Ho Chi Minh City today, and you’ll notice something unmistakable: the skincare shelves are crowded, not just with products, but with shoppers who know exactly what they’re looking for. Vietnam’s beauty scene is no longer an emerging trend—it’s a full-blown cultural shift, shaped by youth, digital savvy, and a desire for authenticity.

What’s fascinating is how the definition of beauty in Vietnam is constantly evolving. Once influenced heavily by Korean and Japanese standards, Vietnamese consumers are now creating a hybrid beauty identity—mixing Eastern skincare routines with Western individuality, and doing it all on their own terms.