What are the first signs that collagen is working?

The five false positives, ranked by how convincing they are, with the check for each

What are the first signs that collagen is working is a question whose honest answer is that the first signs are false positives, every one of them, and the useful page ranks them by how convincing they are and gives a check against each, because a reader who can run the check avoids the two errors the question invites, believing a sign that is not collagen and stopping before the sign that is. Sign one, the most convincing: skin that feels more hydrated, plumper, smoother in the first week or two. The stratum corneum, the surface layer a reader touches, changes its hydration in days with the weather, the central heating, the cleanser and, above all, the fluid a reader drinks, and a collagen powder arrives in a glass of water or a mug that most readers were not drinking before, so the check is whether the glass is new, and in most cases it is; the trials' hydration gains, a few percent by corneometer, were measured at eight to twelve weeks because the dermis beneath turns over on a clock of months, so a week-one feeling is the glass and not the dermis. Sign two: nails that seem stronger or faster-growing at week three or four. A fingernail grows around three millimetres a month and takes six months to replace itself, so the nail a reader is inspecting at week three was made before the tub was opened, and any change in it from any cause cannot yet have grown out from the matrix; the check is the calendar, and the calendar says not yet, with the one collagen nail study, open-label and placebo-free, reading at twenty-four weeks. Sign three: joints that feel better, the knee less achy after leg day. The check is the training log, because a deload week, a lighter block, a new shoe, a change of surface or simply the attention a reader pays to a joint they have started supplementing moves a joint score more than any supplement does, and the joint comfort trials took their first reading at twelve weeks and their clearer one at twenty-four, so a week-three knee is reporting the programme and not the powder. Sign four: hair that seems fuller or sheds less. Scalp hair grows a centimetre a month and each follicle rests for around three months before shedding, so the hairs on the brush today were decided months ago and nothing from any cause shows before three to six months; the check is the cycle, and no collagen trial measured hair at all. Four signs, four checks, and each check comes back the same way: the thing noticed is real and is not the collagen.

The fifth sign, which may be real and is not what collagen is sold for, the only real first sign, and the habit

Sign five is the odd one out: better sleep, an easier drift-off or a fresher morning in the first week of a bedtime collagen drink. This one may be real, and it is not collagen working on anything collagen is sold for. Collagen is around a third glycine by weight, so a ten-gram dose carries around three grams of glycine, and three grams of glycine before bed is the dose a handful of small trials gave for subjective sleep quality, reporting an easier onset and less daytime sleepiness on questionnaires, trials too small and too few for any claim and none exists; add the warm drink, the routine and the expectation, which the placebo and sleep literature shows moves subjective sleep within nights, and a reader has a plausible real effect that has nothing to do with skin, joints, tendons or any tissue the tub names, a footnote rather than a first sign. The only real first sign of collagen working is one almost no reader will see, because it is instrumental: a cutometer reading of skin elasticity or a corneometer reading of hydration at eight to twelve weeks at 2.5 to 10 grams a day, up a few percent against baseline, which is what the skin trials found and what a mirror cannot show; or a scored joint sheet, one provoking movement marked out of ten weekly, moving at twelve weeks at around ten grams a day, which is what the joint trials found and what memory cannot hold. A reader without an instrument gets the next best thing, a photograph in fixed light before the first dose and at twelve weeks, or the sheet, and expects to see very little even then, since a few percent is below what a photograph shows. The one thing worth noticing in the first weeks is not a sign that collagen is working but a sign that it might get the chance to: the habit anchoring at around week three, the dose still being taken with the morning coffee or the last glass of water when a floating dose would have lapsed, which is the variable every trial controlled and the precondition for any reading at twelve weeks. The register's line runs beneath the five signs: collagen holds no claim for any of them, and the tub's skin, hair and nail sentences belong to vitamin C, zinc and biotin beside it. The worked example promises no early sign: two capsules, 1200mg hydrolysed type 1 marine collagen with 12mg vitamin C plus zinc, 120 for £16.99 at 28p a day, lab tested and UK made, below the trial doses, taken for vitamin C's collagen formation sentence and the habit that anchors at week three. What are the first signs that collagen is working: five false positives with five checks, one glycine footnote, and a real sign that arrives at twelve weeks on an instrument most readers do not own.

What to check on the label