Beauty
The order your skincare goes on in, and why it is free
Half of the shelves we are shown are not short of products. They are applying good ones in an order that cancels them out.
3 min read · 12 September 2026
Beauty · The order is free
Routine sequencer
Tick what is on your shelf. The instrument sorts it into a morning and an evening in the correct order and flags the combinations that cancel one another out.
Loading the instrument
Select every product you own. The sequence follows thinnest to thickest and low pH before high, and the warnings are the ones that matter rather than every interaction on the internet.
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The reading behind it
Beauty
What a percentage on a bottle actually buys
Every active has a range where it works, a point where more stops helping, and a point where more starts hurting. The label tells you almost none of it.
3 min read · 11 September 2026
Beauty
Sunscreen, and the four claims worth believing
The single most effective thing on any shelf, sold with the most confusing labelling in the industry.
3 min read · 9 September 2026
The Friday file
One material, one number, one thing worth knowing
A short letter on Fridays: a single material examined, the arithmetic behind a purchase people get wrong, and the one line from the week worth keeping. No offers, because there is nothing to sell.