Online Green Shopping Only Works When Consumers Truly Understand the Product

Have you ever clicked "like" on a post about an eco-friendly product, only to... scroll past and buy nothing? Don't blame yourself. That is not a lack of awareness. It is a psychological gap that science has long identified, and a new study from Vietnam is exposing the truth behind it.

Clicking "like" on a green product post is easy. Spending money to buy that product is an entirely different story. And this study—published in the open-access journal Heliyon by author Kim Quoc Trung Nguyen from Ho Chi Minh City Open University—not only confirms that gap but also points out the missing ingredient to bridge it.

And that ingredient is not a better app, nor is it a flashier marketing campaign. It is something much more fundamental: what consumers actually know.

How Was the Study Conducted?

The study surveyed 375 online shoppers in Vietnam—individuals who had previously purchased green or eco-friendly products over the internet. Using a statistical technique called partial least squares structural equation modeling (PLS-SEM), the author tested an integrated model of how environmental stimuli on e-commerce platforms are converted into purchase intentions.

The results, according to the author, overturn a comforting assumption of digital marketing: that engaging with green content will automatically generate green shopping behavior.

The study is based on the theoretical framework of stimulus–organism–response, a classic model of environmental psychology that tracks the causal chain from external cues to internal states and then to behavior.

Four Factors Stimulating Green Shopping Behavior

In the context of green e-commerce, the "stimuli" are identified as four characteristics:

• Perceived green value: the environmental and personal benefits that consumers believe the product provides.
• Eco-brand credibility: the trustworthiness of environmental claims from a brand.
• Mobile shopping experience: the quality and usability of the shopping application.
• Platform sustainability features: eco-labels, green filters, and transparent environmental information.

The "organism" in the middle of the chain is digital engagement behavior—reading, commenting, sharing, and recommending green content online. The final "response" is online purchase intention.

Most Important Finding: Engagement Is Not Enough to Drive Conversion

The model shows that all four stimuli have positive and significant relationships with digital engagement, while also relating directly to purchase intention. Perceived green value has the strongest pull on engagement with a path coefficient of 0.334, followed by mobile shopping experience at 0.323 and eco-brand credibility at 0.322. Platform sustainability features at 0.287 are also very solid, and notably yield the largest direct impact on intention among the four factors. This shows that tangible cues like eco-labels and green filtering tools do not merely invite engagement; they reduce uncertainty surrounding environmental claims—something consumers often cannot verify before a package arrives.

But here is the shocking part: digital engagement predicts purchase intention, but only weakly. Its direct path coefficient is a mere 0.163—a modest figure, with a small effect size of 0.052. Put simply, people who read, discuss, and share green content online are somewhat more likely to intend to buy green products, but engagement alone explains very little.

The study interprets engagement instead as a transmission mechanism—a bridge carrying value evaluations, beliefs, and experiences toward intention—rather than an autonomous engine driving purchases.

Environmental Knowledge: The Overlooked Deciding Factor

This is the heart of the study. The author tested two consumer capabilities as moderators of the link between engagement and intention: digital literacy (the ability to find, evaluate, and use information online) and environmental knowledge (understanding of environmental events and the ecological consequences of consumption).

Both strengthen the relationship, but environmental knowledge does so much more powerfully. The interaction between engagement and environmental knowledge yields an effect size of 0.810—classified as large—while engagement with digital literacy yields 0.623, which is also large but clearly smaller.

Simple slope analysis brings the model to life:

• When environmental knowledge is high (one standard deviation above the mean), the effect of engagement on intention is strongly positive, with a slope of 0.616.
• At moderate knowledge levels, the slope is 0.163.
• But when knowledge is low, the slope turns significantly negative, at -0.290.

A similar pattern appears with digital literacy, with a slope of 0.540 at high levels, 0.163 at moderate levels, and -0.214 at low levels.

In other words, for consumers lacking these competencies, the more they interact with green content, the less they intend to buy. The author relates this result to the elaboration likelihood model, in which the ability to process information centrally determines whether persuasion succeeds.

Why Environmental Knowledge Matters More Than Digital Skills

The author's answer is that these two competencies operate at different levels of specificity. Digital literacy is instrumental and general: it helps people navigate interfaces, evaluate reviews, and adapt to new apps. Environmental knowledge is value-based and sustainability-specific: it allows consumers to evaluate whether a green claim is credible, recognize greenwashing, and align purchases with their own environmental principles.

A digitally savvy shopper can scroll through eco-marketing campaigns effortlessly without ever asking whether those claims are true. A knowledgeable shopper asks that question first—and the answer determines whether engagement ripens into purchase behavior.

The Vietnamese Context: A Booming E-Commerce Market

The context of Vietnam adds an important layer of interpretation. Our country's e-commerce market has grown among the fastest in Southeast Asia since the pandemic, with platforms like Shopee, Lazada, Tiki, and TikTok Shop becoming primary shopping channels, especially for young, mobile-first consumers.

In such a market, stimulating engagement with green content is relatively easy. The harder task is converting that engagement into sustainable shopping behavior, which depends on whether consumers can critically evaluate environmental information.

The author notes that in more mature green markets, where official certification systems and established eco-labels carry higher institutional weight, individual environmental knowledge may play a less dominant role. Therefore, the findings should be generalized cautiously.

Practical Implications: Lessons for Businesses and Policymakers

The study offers concrete and practical suggestions:

1. Invest in Transparent and Specific Environmental Information

Platforms and sellers should provide clear, specific, and consistent environmental information, including explicit eco-labels and user-friendly green filters, to combat the skepticism caused by greenwashing.

2. Design Digital Experiences That Truly Foster Engagement

Although engagement is not enough to drive conversion, it remains a meaningful pathway. Businesses should design digital experiences that encourage genuine engagement, not just superficial clicks.

3. Treat Consumer Competence as Strategic Infrastructure

Most importantly, businesses and policymakers should treat consumer competence as strategic infrastructure. Educational initiatives building environmental knowledge and digital literacy will, according to this evidence, do much more to convert clicks into sustainable purchases than any amount of advertising content.

Limitations of the Study

The author also acknowledges important limitations: a convenience sample, cross-sectional self-reported data, and a single-country context mean the results are associative rather than causal. However, the central message stands firm: in green e-commerce, what the consumer knows shapes the value of engagement.

When Understanding Becomes the Key to Sustainability

I have witnessed many waves of consumption over the past two decades. From the early days of organic products, through the era of cloth bags and paper straws, to the current wave of green e-commerce. Each wave carries a promise: that consumers will change the world with their wallets.

But this study reminds us that good intentions are not enough. Interacting with green content, sharing posts about sustainability, clicking "like" on eco-friendly products—all of these matter, but they are merely stepping stones. The final step—the purchase decision—requires something deeper: understanding.

And that understanding cannot be manufactured by a marketing campaign. It must be built from education, from transparency, and from continuous efforts to help consumers distinguish between genuine green claims and greenwashing.

In the battle for a sustainable future, the most powerful weapon does not lie in the hands of corporations or governments. It lies in the knowledge of every consumer. And our duty—as communicators, educators, and business professionals—is to hand them that weapon.

Have you ever bought a product just because it was labeled "green" or "eco-friendly," only to realize later that you didn't really understand how that product was sustainable? In your opinion, what is the most effective way to raise environmental knowledge for Vietnamese consumers—through formal education, media campaigns, or changes in how e-commerce platforms display product information? And if you are a seller, what would you do to help customers not only "like" but truly understand and buy your green products? Share your views below—because in the fight against climate change, every informed consumer is one step closer to a sustainable future!