📖 Etymology corner, before we dive in
The word "advertisement" traces back to Latin advertere — "to turn toward," from ad- (to) + vertere (to turn). An advertisement is, etymologically, something designed to turn your attention toward it.
The word "consent" comes from Latin consentire — "to feel together, to agree," from con- (together) + sentire (to feel). Consent is a meeting of minds — a mutual, genuine agreement.
For decades, online advertising turned your attention toward things you never agreed to see — and used "consent mechanisms" (those tiny, moving, barely-visible ✕ buttons) that were designed to look like an opt-out while actually being an opt-in. Vietnam's Decree 342/2025/NĐ-CP just outlawed that gap between appearance and reality. Ngọc Prinny-mode: on. 🦊
🧐 Meet today's affected parties
User Rina Tran is a Vietnamese internet user. Every morning she opens her phone to read the news and is ambushed by: a full-screen pop-up where the ✕ button is invisible for 8 seconds, then appears in the corner at 4-point font; a video ad that plays for 25 seconds before a skip button materializes; and a cosmetics ad featuring a doctor in a white coat solemnly recommending a face cream.
Brand Manager Chloe Chan runs digital marketing for a cosmetics brand. Her entire media plan relies on: pop-up ads with strategically placed close buttons, 20-second pre-roll video forcing viewers to watch, and a popular dermatologist's face on every banner.
On 15 February 2026, both of their realities change significantly — in opposite directions. 🔄
🧐 "First instance": what the old reality looked like
The pre-Decree 342 advertising landscape had developed a sophisticated ecosystem of what UX designers call "dark patterns" — design choices that manipulate user behavior against the user's own interest:
- The ghost ✕: A close button that appears for 0.5 seconds, then vanishes, then reappears in a different corner, then turns out to be a link to the advertiser's website
- The marathon pre-roll: Video ads with 25–30 second mandatory viewing before a skip option appears — long enough to deliver the entire message by force
- The borrowed white coat: Cosmetics brands featuring doctors, pharmacists, or "experts in lab coats" to lend medical authority to skincare products that have never been near a clinical trial
For Rina, this was daily friction. For Chloe, it was an effective strategy. The regulation that just landed changes both of those facts.
⚖️ "On appeal": what Decree 342/2025/NĐ-CP actually requires
Issued by the Government, effective from 15 February 2026, Decree 342/2025/NĐ-CP provides detailed implementation of the Advertising Law for digital advertising and specific product categories.
Rule 1: The fake ✕ button is now illegal 🚫
For floating ads, pop-ups, and all non-fixed-position advertisements, the close/skip function must:
- Work with a single interaction — one tap, one click. No second tap, no scroll, no redirect.
- Be clearly identifiable — not disguised, not camouflaged against the background, not styled to look like a content element
- Actually close the ad — not open a browser tab, not navigate to a landing page
Absolute prohibition: Using fake close buttons or designing close buttons in ways that are difficult to distinguish or cause confusion. The word "absolute" (nghiêm cấm tuyệt đối) in Vietnamese regulation is not decorative — it means no exceptions, no workarounds.
Rule 2: The 5-second rule for video and animated ads ⏱️
- Static image ads: No mandatory wait time at all — cannot force users to view for any minimum period before offering a close option
- Video ads and animated image sequences (slideshows, GIFs, motion graphics): Maximum mandatory viewing time before the skip/close option appears is 5 seconds
What this means for creative strategy: If your entire message requires 20 seconds of setup before delivering the value proposition, you have a creative problem, not just a legal one. The new rules force what good ad creative always aimed at: earning attention rather than demanding it. The first 5 seconds now carry the entire weight of the brand message.
Rule 3: Users get a report button and real transparency 📣
Advertisers and publishers are now required to provide tools enabling users to:
- Easily report violations in advertising content
- Refuse or close ads they don't want to see
The complaint-handling mechanism must be timely and transparent in its results — not a black hole where reports disappear.
Rule 4: Cosmetics advertising gets a complete overhaul 💄
Required disclosures in every cosmetics ad:
- Product name — full, accurate name as registered
- Functions and uses — strictly as documented in the official product declaration file (hồ sơ công bố) — no enhancements, no exaggerations
- Name and address of the organization/individual responsible for bringing the product to market
- Safety warnings as required by applicable international agreements
Absolute prohibitions in cosmetics advertising:
- Content that could cause consumers to mistake a cosmetic product for a medicinal product — no "treats," no "cures," no "clinically proven" language that implies pharmaceutical-grade efficacy
- Use of images, uniforms, names, endorsement letters, or articles from:
- Medical facilities (hospitals, clinics, health centers)
- Doctors
- Pharmacists
- Any healthcare workers
No more "Dr. Nguyen recommends." No more model in a white coat pointing at your face cream. No more "as seen at X Hospital." Real or fictitious — the borrowing of medical authority for cosmetics advertising is categorically prohibited.
The comparison above maps the before-and-after for both Rina and Chloe.
🏠🚗 Real-life analogies
- 🏠 The emergency exit that leads to a gift shop. Fire safety codes require emergency exits to open easily and lead to actual safety — a door labeled "EXIT" that leads into a merchandise display area would be a serious violation. The fake ✕ button is the digital equivalent: it looks like an exit, but leads somewhere else entirely. Decree 342 is the fire code for digital exits.
- 🚗 The mandatory waiting period vs. the actual service. Imagine arriving at a government office and being told you must sit in a waiting room for 20 minutes before being seen, not because there's a queue, but because the policy is to make you wait long enough to "understand the value of the service." Most people would find that absurd and coercive. That's exactly what 20-second unskippable pre-roll ads were — a forced waiting period dressed up as content delivery.
🤔 Did you know? Quick legal trivia 🤔
- The 5-second skip rule mirrors what YouTube voluntarily introduced for some ad formats internationally — Vietnam has now made a similar standard a legal requirement rather than a platform-level choice. This effectively sets a national floor that all digital advertising platforms operating in Vietnam must meet.
- Dark patterns — the design discipline of hiding exits, making refusals harder than acceptances, and disguising ads as content — is now subject to active regulatory pushback in multiple jurisdictions worldwide. Vietnam's Decree 342 joins the EU's Digital Services Act and similar legislation as part of a global regulatory movement against manipulative UX.
- The cosmetics-medicine confusion ban has teeth because Vietnamese pharmaceutical law already draws a strict line between cosmetics (mỹ phẩm) and drugs/medicinal products (thuốc). Implying a cosmetic product treats or cures a medical condition doesn't just violate advertising law — it can also trigger drug advertising regulations, which carry substantially heavier penalties.
- Publishers (website operators, app developers, platforms that display third-party ads) are jointly responsible for compliance — the obligation falls on both the advertiser creating the content and the platform distributing it. A website can't escape liability by saying "the advertiser made the fake button."
📝 Quick self-quiz — are you digital-ad-law-fluent?
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Under Decree 342/2025/NĐ-CP, what is the maximum waiting time before a user can skip or close a video advertisement? A. 3 seconds B. 5 seconds C. 10 seconds D. 15 seconds
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True or false: static image pop-up ads are permitted to require a mandatory 3-second viewing period before the close button appears.
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Which of these is now absolutely prohibited in cosmetics advertising? A. Showing the product being applied B. Using a doctor's image to endorse the product C. Displaying the product name D. Listing safety warnings
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Who bears responsibility for ensuring digital ads on a website have compliant close buttons? A. The advertiser only B. The website/publisher only C. Both the advertiser and the publisher/platform D. The Ministry of Health
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A cosmetics ad says the cream "clinically proven to treat hyperpigmentation" and uses a dermatologist's photo. How many violations does this potentially contain? A. Zero — health claims are fine in cosmetics ads B. One — only the doctor photo is banned C. Two — medicinal language AND medical professional imagery are both banned D. Three
Answer key: 1-B · 2-False (no mandatory wait time for static image ads) · 3-B · 4-C · 5-C 🎉
💡 Practical tips — for advertisers, brands, and publishers
For advertisers and brands:
- Audit every active digital ad format immediately. Check: Does the close button appear immediately (for static) or within 5 seconds (for video)? Does one tap actually close — or does it redirect?
- Strip all medical professional imagery from cosmetics campaigns. This includes stock photos of people in white coats, references to doctors "recommending," and any hospital/clinic name associations.
- Review all product claim language against the registered product file (hồ sơ công bố). If your ad copy says the product does something not in that file, it needs to change — not "soften," change.
- Rebuild your 5-second creative brief. Your video hook now has to deliver the entire emotional and brand value in the first 5 seconds. This is a creative constraint that tends to produce better work, not worse.
For publishers and platforms:
- Technical audit of your ad-serving infrastructure. Any ad unit that doesn't support one-tap close for floating/pop-up formats is now a compliance liability.
- Build the complaint reporting tool into your ad interface — not buried in a "Contact Us" form three clicks away, but accessible directly from the ad unit.
- Review your advertiser contracts — you may need to add compliance warranties from advertisers regarding their creative materials.
🌿 A quick detour into nature's version of this rule
Behavioral ecologists study deceptive signaling — when an organism produces a signal that mimics a legitimate signal to exploit the receiver. The orchid mantis mimics a flower to lure pollinators it then eats. The anglerfish dangles a glowing lure to attract prey. These deceptive signals work precisely because they look like something trustworthy. The fake ✕ button is digital deceptive signaling: it looks like a user-control affordance (a real close button) while actually being an advertiser-control affordance (a link to their page). Decree 342 is, in ecological terms, an evolutionary pressure that removes the fitness advantage of deceptive signaling — if deception is penalized heavily enough, honest signals become the only viable strategy. 🦷🌸
🗣️ Over to you
How many fake ✕ buttons have you rage-clicked in the last week alone? And for the marketers in the room: does the 5-second skip rule feel like a creative constraint or a creative opportunity? Drop your take in the comments — and if you manage ads for a cosmetics brand, now would be a good time to check those campaigns. 📣
#VietnamLaw #AdvertisingLaw #DigitalMarketing #OnlineAds #Decree342 #ConsumerRights #DeluluVN #NgocPrinny #LegalEducation #MarketingVietnam
🚨 Fun but serious: a brief legal disclaimer 🚨
Hey there, legal explorer! 🕵️♀️ Before you close this tab — with one tap, as the law now requires —
- This article is a map, not a teleporter 🗺️ — it explains the rules, but your specific ad formats and product categories may have additional compliance dimensions.
- Cosmetics vs. pharmaceutical classification depends on your specific product's regulatory status 🦄 — confirm with a specialist before revising campaign copy.
- For advertising compliance reviews or enforcement queries, summon a professional legal wizard 🧙♀️ — may we suggest Thầy Điệp & Associates Law Firm.
- Reading this doesn't make you an advertising lawyer, the same way skipping a video ad doesn't make you immune to the brand message. 📺😉
Full disclaimer: ngocprinny.blogspot.com/2024/08/disclaimer.html
#LegalInfo #delulu.vn #NotLegalAdvice #ConsultAPro #NgocPrinny
💝 Support your legal ninja's wellness fund! 🍵
This article is proudly fake-✕-button-free. Everything runs on:
- Hours of reading regulations so you don't have to 📚
- 10+ years of hands-on legal expertise ⚖️
- A sincere hope that the internet becomes slightly less annoying 📝
- And the usual herbal tea 🍵
If this post made you feel slightly more powerful the next time you close an ad, consider treating this ninja to a green tea →. 🌱
More about the author and the DELULU world: delulu.vn/about-2/
Author: Nguyễn Lê Bảo Ngọc (Ngọc Prinny) Reviewed by: Lawyer Lê Thị Kim Dung and Lawyer Nguyễn Văn Điệp, Thầy Điệp & Associates Law Firm
And a little closing wish, timed exactly to when you're reading this:
🌙 Nếu bạn đọc bài viết này vào buổi tối, chúc bạn ngủ thật ngon — và mong rằng không có quảng cáo nào làm phiền giấc ngủ của bạn.
☀️ Nếu bạn đọc vào buổi sáng, chúc bạn một ngày tràn đầy năng lượng — và những nút tắt quảng cáo luôn hoạt động đúng như tên gọi của chúng!
🇬🇧 Wherever you're reading from — may your close buttons be real, your video ads be skippable in 5 seconds, and your skincare brands be honest about what they actually do.
🇯🇵 いつ読んでいても、心穏やかな一日を。
🇫🇷 Et où que vous soyez, que vos publicités soient honnêtes — et vraiment fermables. ☘️
