# The 30 Wears Rule: A Ten-Second Test Before You Buy

> Will you wear it 30 times? One question that filters out most regrettable purchases — and what to do when the answer is "maybe".

By [Vær](https://vaer.app/about/)

Published 19 September 2026 · 2 min read · [Read on the web](https://vaer.app/blog/30-wears-rule/)

Standing in a changing room, holding something you quite like, ask yourself one question:

> Will I wear this at least 30 times?

If the honest answer is yes, buy it. If it's no, put it back. If it's "maybe", read on.

## Where it comes from

The #30wears challenge was started by Livia Firth in 2015 as a simple counter to fast fashion. It went viral because it's easy to remember and hard to argue with. Thirty is not a magic number — it's just high enough to filter out the impulse buys and low enough to be realistic.

## Why it works

Thirty wears forces you to imagine the future, which is exactly what a sale sticker stops you doing.

- A dress for one wedding? That's 1 wear. **Fail.**
- A white t-shirt? Thirty wears in a single summer. **Pass.**
- Sequinned trousers you'd wear at Christmas? Ten years to reach thirty. **Probably a fail.**

It also reframes price. A £150 jacket you'll wear 30 times costs [£5 a wear](/blog/cost-per-wear/). A £25 top you'll wear twice costs £12.50 a wear. The jacket is cheaper.

## The "maybe" pile

Most purchases live here. Three follow-up questions usually settle it:

1. **Does it go with three things I already own?** If you'd need to buy something else to wear it, that's a no.
2. **Would I wear it next week?** Not "for the right occasion". Next week.
3. **Is there something in my wardrobe already doing this job?** If yes, this is a duplicate, not a discovery.

## Check your own history

The best predictor of whether you'll wear something 30 times is whether you've worn similar things 30 times. If you track your wears, you already know: your linen shirts get worn to death, your going-out tops don't.

That's the quiet superpower of counting. The rule stops being a guess and becomes a fact about you.

## One caveat

The 30 wears rule is a filter, not a licence. Passing it doesn't mean you need the item — it means the item won't be a waste. "I don't need this" is still a perfectly good reason to leave the shop.

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Vær tracks cost per wear across your wardrobe. [Download on the App Store](https://apps.apple.com/app/id6765822084).