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Notes from The Cult

The world of Helio, straight from the people building it.

3 min
Featured

01Face-shape guide: what suits your face

Shape is the fastest way to cut twenty frames down to a handful. None of it is a rule, and all of it beats scrolling. By Helio® · September 2026 There are twenty frames...

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3 min

Size and fit: what the millimetres mean

Three numbers sit inside every pair of glasses. Once you know what they do, buying frames online stops being a guess. By...

5 min

Not all blue light is the enemy

Some of it sets your body clock. Some of it just tires your eyes. The trick is knowing which is which, and...

5 min

Sunglasses vs blue light glasses

They can look identical and even share a frame, but they do two different jobs. Here's which you actually need, and when....

6 min

Sunlight and your body clock: why daylight matters

The single most powerful thing you can do for your body clock isn't blocking light at night - it's seeking it in...

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