Foam Rollers and Rag Setting

A cylinder with nothing inside it, and a strip of cloth

A foam roller is a compressible cylinder, sometimes sleeved in mesh, held with a light clasp or a pin rather than a strap. There is no skeleton in it at all, so it gives across its entire width. The trade name for the squashiest sort is a pillow roller, and it is accurate: you can sleep on one, which was always the point.

A rag is simpler still. A strip of cloth has no diameter of its own until hair is wound onto it. The wearer decides the size of the curl by how much cloth is in the roll and how much tension goes into the wind, and the ends of the strip are tied in a knot or a bow to hold it. Nothing about that has changed in two hundred years.

What both share, beyond softness — and what separates them from the wire-cored tools on benders and flexi-rods — is that the hair is not being forced onto a shape. It is being invited into one. A rigid rod imposes a radius; foam and cloth compress until the hair stops pushing, so the finished section is a lazy oval rather than a true cylinder, and no two of them come out identical. The trade-off is control. These are the least precise tools in the library, and on a head where you want forty matching curls they are the wrong choice.

Curl before chemistry, and the word that survived

Everything else in this library depends on a bottle. This does not, and it is older than all of it by a very wide margin. Long before anyone could break a disulphide bond on purpose, hair was set by winding it damp onto strips of cloth or twisted paper, tying them off, and going to bed. In the morning the ties came out and the curl was there. It was domestic, it was free, it required nobody’s permission and no equipment anyone had to buy, and it worked. The setting lotions that came later, gum and sugar solutions painted on before the wind, are at before the perm.

The French word for the paper version is papillote, and its afterlife is the best single piece of evidence for how long and how widely this was done. It travelled into half the languages of Europe as the ordinary trade word for a soft setting tool and it is still there — and it travelled into cookery as well, where food baked wrapped in a twist of paper is still cooked en papillote. Same word, same idea, same little paper parcel. When a European supplier lists papillotes today they mean a soft bendable former, and the word arrived in the catalogue by way of somebody’s grandmother.

Germany

Papilotten · beside Stoffwickler, cloth winder, and Schaumstoffwickler, foam winder

Sweden

Papiljotter · and tygspolar, cloth spools

Poland

Papiloty · and walki piankowe, foam rollers

Russia

Тряпичные бигуди · tryapichnye bigudi, literally rag curlers

China

布条卷发器 · cloth-strip curling device

Japan

布ローラー · nuno rooraa, cloth roller

Six languages, one object, and in every one of them the name is still the material it was first made of — paper, or cloth.

When manufactured hardware arrived, the soft methods did not die; they were pushed to one side. Cold waving in the 1940s and 1950s wanted grip and speed, and hard plastic gave both, so plastic took the salon. Foam kept the bedroom. By the 1960s and 1970s the lightweight synthetic pillow roller was a mass-market object on almost every dressing table in Britain, doing overnight what a salon did in an hour with a dryer. Professionals kept soft tools for delicate scalps, for period and editorial work, and for the client who cannot bear the weight and pull of a head of plastic rods. What is happening now is a revival, and it is a genuine one, but it is a revival of a domestic craft rather than a professional one.

Water, hydrogen bonds, and the whole of the mechanism

This is the mechanism behind every wet set, blow-dry and roller set that has ever been done, and it is worth understanding properly because it explains both why the technique works and why it stops working.

Hair holds its shape partly through disulphide bonds, which are strong, permanent and the thing a perm lotion goes after; and partly through hydrogen bonds, which are weak, extremely numerous, and broken by nothing more dramatic than water. Wet the hair and the hydrogen bonds let go. Put the wet hair into a shape, dry it in that shape, and the hydrogen bonds re-form holding the new position. That is the entire trick. It requires no chemistry, no heat and no skill beyond patience.

A perm changes the bonds that water cannot touch. A set changes the bonds that water undoes. That single sentence is the whole difference between the two.

Which means the set has an expiry date built into it from the first minute. Wet the hair again, or leave it long enough in a damp room, and the hydrogen bonds release and the hair goes back to what it was. That is why a beautiful set collapses in London drizzle while a perm does not, and why a set is completely undone by a single wash. More on that at curl memory and water, which is the page for anyone who has wondered why their hair reverts on the walk to the station. It is also, incidentally, why the sets people slept in for generations were done on damp hair rather than dry: dry hair wound on a rag does very little, because there is nothing to release and re-form.

How long it lasts, said plainly

I would rather be blunt about this here than have anyone find it out on a Sunday morning.

A heatless set lasts days. Not weeks, and certainly not months. Until the next wash, or the first properly wet afternoon, whichever arrives first.

No product changes that. No overnight technique changes it, no silk tube changes it, no setting spray changes it, and no amount of skill in the winding changes it. A hairspray or a setting lotion can hold the shape against ordinary humidity for a while — that is what they are for, and they buy hours or a day rather than a category of time — but the bonds doing the work are still the ones that water undoes.

None of that is an argument against it. A set is the right answer far more often than the trade admits. It costs almost nothing, it can be repeated as often as you like, it asks nothing whatsoever of the fibre, and it can be done on hair far too fragile for any chemical service — hair that has been through bleach, hair that is mid-recovery, hair belonging to someone who has been told no by me and wants curl anyway. For that client it is not a consolation prize. It is the version of the look they can actually wear, indefinitely, without cost.

Heatless curls, which are rag curls with a new name

The overnight heatless-curl sets that fill social media — damp hair wound round a soft tube, or a dressing-gown cord, or a length of ribbon, tied and slept in, filmed the following morning — are precisely the technique described above, rediscovered by a generation that had never been shown it. There is nothing new in it, and there is nothing wrong with it either.

I am genuinely glad it came back, and not out of nostalgia. It arrived at the end of a long period in which the default route to a curl was a hot iron used most mornings, and hot irons do cumulative damage that nothing reverses. A method that reaches the same look with water and time is a straightforward improvement in the health of a lot of people’s hair. It is also the only curling technique on this site that a fourteen-year-old can do to herself with no risk at all, which matters more than it sounds.

Two practical notes from the chair, since the videos rarely include them. Hair should be damp rather than soaking — sopping hair will not dry through overnight and comes out limp and disappointing, and towel-dried to about eighty per cent is the state you want. And the ends are where the failure usually is: a tip that was not wound smoothly onto the strip finishes with a crimp or a hook in it, and no amount of shaking it out afterwards removes that. Wind the last inch with attention and the rest forgives you.

The one thing I would say against the revival is the vocabulary that has grown around it, which borrows from perming and promises accordingly. There is no restructuring going on. Nothing is being repaired, sealed or rebuilt. Water went in and water came out, and the hair is exactly what it was before, which is the best possible outcome and does not need improving on.

When soft tools carry a perm, and the rules that do not move

Foam rollers do occasionally hold a chemical service — usually a mild lotion at a generous diameter, for a soft vintage silhouette with no ring of defined curl in it. It is an uncommon choice and it has particular ways of going wrong.

1. Slippage. There is no locking mechanism. A clasp that was not seated or a tie that worked loose lets the section unspool, and it then processes straight while every section around it curls. That is the characteristic failure and it is not always visible until the rinse.
2. Absorption. Open-cell foam takes up lotion; denser closed-cell material takes up much less; both exist and no percentage worth publishing describes either. Mix enough and check saturation rather than assuming it, because an under-saturated section simply reads looser than its neighbours.
3. Raw fabric cannot be cleaned to salon standard. Which is the honest reason rag setting is not a chemical service in a professional salon, whatever its merits at home. Cloth soaked in a reducing lotion is not going on another client’s head.

And the tool changes none of the chemistry. This needs saying on every page in this family, because softness is exactly the quality that tempts a salon across a line it should not cross.

Aftercare, if there was a lotion involved, is seventy-two hours. Neutralising reforms the bonds but it does not finish the job on the spot — oxidation carries on in air and the fibre keeps hardening for about three days. In that window what you press into the hair tends to stay: no tight ties, no clips, no hard brushing, and go gently with heat. For washing, follow the instruction that came with the product used rather than a thirty-year-old rule of thumb. None of that applies to a set, which you may wash out five minutes after making it if you change your mind.

Questions