The ‘Underconsumption Core’ Trend Has Brands Panicking — And Gen Z Spending Data Proves It’s Real

The most radical thing a Gen Z consumer can do in 2025 isn’t buy the latest drop. It’s film themselves *not* buying it.

A quiet but powerful cultural shift is reshaping the retail landscape, and the numbers are beginning to catch up with the vibes. The **underconsumption core** aesthetic — a TikTok-born movement celebrating worn-in sneakers, half-used skincare bottles, and wardrobes that haven’t been refreshed in years — has crossed 2.3 billion views on the platform. More importantly, it’s translating into measurable behavioral change. Brands like Shein and Ulta reported 8–14% drops in Gen Z basket sizes in Q1 2025 compared to the same period last year.

This isn’t just an aesthetic. It’s an economic signal.

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What Is Underconsumption Core, Exactly?

At its core, **underconsumption core** is the anti-haul made visual. Where haul culture once rewarded creators for showing off bags stuffed with new purchases, underconsumption core flips the script entirely. Creators post videos showcasing the same moisturizer they’ve used for three years, jeans with fraying hems they refuse to replace, and kitchens stocked with only what they actually need.

The aesthetic borrows the same soft, intimate visual language as “clean girl” or “cottagecore” — natural lighting, unhurried pacing, a sense of quiet contentment. But its message is pointed: enough is enough, and more is no longer aspirational.

The trend didn’t emerge in a vacuum. It grew alongside rising Gen Z anxiety about student debt, housing unaffordability, and climate guilt. When buying less becomes both financially necessary *and* morally virtuous, a movement earns real staying power.

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The Anti-Haul Goes Mainstream

The **anti-haul** concept has existed in sustainability circles for years, but underconsumption core democratized it. Participation requires no eco-activist credentials or minimalist philosophy. You just need to stop buying things — and film it.

Creators with millions of followers are now building entire content identities around *not* purchasing. Videos titled “things I’m not buying this month” and “using everything up before buying more” routinely draw hundreds of thousands of views. The content is aspirational in a new way: it signals financial discipline, environmental awareness, and a deliberate rejection of the anxiety-driven consumption loop that fast fashion brands spent decades engineering.

For brands whose entire growth model depends on impulse purchasing and trend velocity, this represents a direct threat to their core mechanic.

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The Fast Fashion Decline in the Data

**Fast fashion’s decline** isn’t a new story, but the Gen Z dimension is. Previous downturns were largely driven by older millennial consumers pivoting to secondhand or sustainable brands. What’s different now is that Gen Z — the demographic fast fashion brands spent years cultivating through TikTok advertising — is pulling back from within the platform itself.

Gen Z spending data from Q1 2025 paints a clear picture. Basket sizes at fast fashion and beauty retailers dropped noticeably among consumers aged 18–26. Analysts tracking retail card data noted the decline was concentrated in discretionary categories: clothing, accessories, and multi-step beauty routines — precisely the categories that haul culture once turbocharged.

Shein, which built its empire on micro-trend velocity and near-daily new arrivals, is particularly exposed. Its business model depends on consumers feeling perpetually behind and perpetually in need of an update. Underconsumption core attacks that psychological engine directly.

Ulta faces a parallel dynamic in beauty. The “skinimalism” trend — fewer products, simpler routines — has been building for several years, but underconsumption core has accelerated it. When a creator with 800,000 followers posts a video about finishing her last bottle of serum before buying a replacement, that’s not just content. It’s a purchasing delay multiplied across a massive audience.

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Why Brands Are Struggling to Respond

The traditional brand playbook for navigating a cultural headwind is to co-opt it. Brands tried this with sustainability — attaching “conscious collection” labels to existing products and calling it progress. They tried it with minimalism, marketing “capsule wardrobes” while still pushing 40 new SKUs a week.

Underconsumption core is harder to co-opt because its entire value proposition is *not buying your product*. There is no version of a Shein haul that doubles as an underconsumption core video. The aesthetic is structurally incompatible with the brands it threatens.

Some marketers are experimenting with longevity messaging — emphasizing durability and value-per-wear — but executing that credibly requires a fundamental rethinking of supply chains, price points, and content strategies that most fast fashion brands are not equipped to deliver quickly.

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Is This a Lasting Shift or Another Trend Cycle?

Skeptics will note that TikTok aesthetics have a notoriously short half-life. Cottagecore gave way to dark academia, which gave way to clean girl. Underconsumption core could follow the same arc.

But there are structural reasons to believe this one has more durability. The economic pressures driving Gen Z toward spending restraint — inflation, rising rents, wage stagnation for entry-level workers — show no signs of easing. When a cultural aesthetic aligns with financial necessity rather than pure style, it tends to outlast the trend cycle.

There’s also a generational identity dimension at play. Gen Z has watched millennials get mocked for avocado toast and blamed for killing entire industries. Underconsumption core offers a different narrative: *we’re not broke, we’re intentional*. That reframe carries genuine psychological staying power.

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The Bottom Line for Brands and Analysts

The underconsumption core movement is a case study in how internet aesthetics can become economic forces. When a visual language celebrating restraint accumulates billions of views among a generation entering its peak spending years, the downstream effects on retail are real and measurable — not theoretical.

For brand marketers, the lesson isn’t to panic or pivot overnight. It’s to take seriously the possibility that the consumption-maximization model has a ceiling, and that Gen Z may be the generation that found it. For retail analysts, the Q1 2025 basket size data is a number worth tracking closely through the remainder of the year.

And for the Gen Z consumers filming their three-year-old moisturizer in golden-hour light? They’re not just making content. They’re rewriting the rules of what it means to want things.