Barrier repair became the category that sells everything, which is how a perfectly functional stratum corneum ended up being treated as an emergency four nights a week.

Powder asks you to be precise with a brush you probably bought for something else. Cream asks you to have fingers, and that is most of the story.

Longevity is a function of molecular weight, concentration and your own sebum. Price correlates with none of the three, and nobody selling it has a reason to say so.

A short, sensible ingredient list at an unsensible price. It does what it claims, and the pump is the reason we cannot recommend it without a caveat.

Leaving your hair alone is the one instruction everybody follows and almost nobody follows correctly, because the shape is set in the first twenty minutes.

The evidence for sleep restriction changing how skin looks and heals is better than the evidence behind most of the shelf. It is also the hardest thing to sell.

Every other claim in the category is a probability. This one has a randomised trial behind it, and the argument now is only about how you get people to wear it.

Forty shades is a shelf-space decision. Whether any of them matches you is a question about the two or three pigments behind all forty, and that has barely moved.

Sold as a way to start your hair again from scratch. It is a competent, slightly harsh cleanser with an excellent scent and a claim it cannot support.

The method exists to remove things water cannot. If your evening face is bare skin and a moisturiser, you have been washing twice for no reason.

The pyramid on the box lists ingredients that may not be in the bottle. What you smell is a handful of blended effects, and learning those is what makes buying easier.

Five minutes of the right questions prevents most of the haircuts people cry about. Here is what a good stylist asks, and what you should volunteer if they do not.

The twelve-piece set is a merchandising format, not a kit. Almost everything you do with makeup is done with a dense flat brush and a tapered fluffy one.

Twelve weeks before anything is worth judging, and most people quit at three. The schedule matters more than the strength, and almost nobody is sold the schedule.

The colour payoff in two coats is the best we have tested at home. The removal is a forty-minute ordeal that took a layer of nail with it.

The mask is not doing much. The ninety minutes of not looking at a screen while it sits on your face is doing a great deal, and that is a legitimate product.

Three is the limit, four hours is the minimum, and the coffee beans on the counter have never worked. A method for buying scent you will still like in March.

Fifty-two manicures, one pair of hands, and a spreadsheet. The shades that flattered had almost nothing in common with the shades that photographed well.

A gel's job is to hold a shape the hair already had. Almost nothing on the shelf can create a curl pattern, and the products that imply they can are the expensive ones.

A dab on the wrist for ten minutes tests nothing at all. Real sensitisation takes days to appear, which is exactly why the useful version of this is boring.

One of the few L-ascorbic acid serums we have tested that still works at week eight. It is also in clear glass, which is how the previous batch died.

We audited five readers' bathroom shelves against what each product was actually doing. The average was nine items and the average useful count was under three.

The shade in the bullet is a pigment blend meeting your lip's own colour and translucency. Two people wearing the same red are not wearing the same red.

A wardrobe of fragrances is the industry's preferred outcome and a worse experience than a signature. Scent works by association, and association needs repetition.

The frequency debate has produced an enormous amount of anxiety and very little evidence. Scalps differ, and the one that tells you what it needs is yours.

Spraying water on your face and letting it evaporate leaves you drier than before. That does not make the category useless — it makes the marketing wrong.

One person, one variable, and a camera in the same spot every morning. The results were real, smaller than expected, and not in the places anyone photographs.

Twelve shades, three of which get used, and a hinge that will fail before the pans are half gone. The format exists because it photographs well.

A nude that works across a genuinely wide range of skin tones, in a formula that stays comfortable for six hours. The shade name is the only dishonest thing about it.

If you change three products in a fortnight you will never know which one worked. The most valuable thing a routine can have is the ability to be tested.