Every search I run lands on a brand blog whose conclusion is conveniently the product at the bottom of the page, and the video side is worse. I'm not looking for a routine, I want sources I can read that explain the chemistry and are honest about what isn't known. What do people here actually read, and how do you sanity check something before you believe it?
Adding the disagreement to that. Even the good chemistry writers are mostly extrapolating from in-vitro work on hair swatches, because that's what exists. Combing force on a tress in a lab is a real measurement and it is not the same as your hair after a week of humidity, sweat and a bike helmet.
So I'd say read them for mechanism — why a cationic conditioner sticks to damaged hair, why oil-soluble things reach the follicle — and don't expect them to predict outcomes on your head. Mechanism generalises. Results don't.
Something I got wrong for years: treating forums for a specific hair type as evidence. There's real accumulated experience in curly and coily communities in particular, and there's also folklore that's been repeated so long it reads as fact — the porosity float test being the obvious one.
Use them for what people tried, not for why it worked. The why is almost always retrofitted.
Practical test I use before believing anything: does the source ever say a product category is unnecessary?
A blog that has never once concluded "you don't need this" is a catalogue. The ones worth reading have posts saying that most people don't need protein treatments, that porosity tests in a glass of water don't work, that a £40 serum and a £6 one contain the same three actives. Those posts cost the author money, which is why they're the signal.
Good filter. The two writers I trust most have both published posts telling people not to buy an entire category, and one of them lost a sponsorship over it.
If you want one starting question for any claim: what would have to be true for this to be wrong, and does the page mention it? Brand blogs never do. The chemists do, in the second half, after the interesting part.
@refresh_rhea · 6mo ago · 3 replies
Three habits, in rough order of usefulness.
First, follow actual cosmetic chemists rather than stylists or brands. There are a handful writing publicly — the ones with a chemistry doctorate who cite papers and will happily say "this ingredient does very little" about a product category their audience loves. That last part is the filter.
Second, read ingredient lists directly. There are free sites that decode INCI names and tell you what a given ingredient is for; ten minutes there kills more marketing claims than any blog post.
Third, when a claim has a study attached, check whether it was done on hair tresses in a lab or on people's heads. Almost all of them are the former, and it matters enormously.
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@visible_stitch · 6mo ago
The lab tress versus real head distinction is the one I've been missing entirely. Half the claims I've been trying to evaluate are combing-force measurements dressed up as outcomes.
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@flat_fix_finn · 6mo ago
And once you notice it you can't stop. Almost every 'proven to reduce breakage by 73%' number comes from a swatch on a machine.
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