Zoltan Hair teCsture · Mayfair · ↑ Up · The free guide
The Ultimate Guide to Perms, Waves and Curls
Everything that puts a bend in hair and keeps it there — nine chemistries, thirteen ways to wrap a rod, the tools, the countries and the history. Sixty pages, free, nothing asked for.
This is the Up half of the reference. The other half, everything that takes a bend out, is the ultimate guide to smoothing and straightening. Same bonds, opposite direction, one discipline — which is why both guides live on this site and why I do not treat them as different jobs.
It is written for clients. There is no trade vocabulary you are expected to already have, and where a word is unavoidable it gets explained where it is used. Stylists read it too, and are welcome to.
- Pages
- 60 Free, no email asked for, nothing behind a form.
- Chemistries
- 9 From sulfite, the gentlest, to alkaline cold, the firmest.
- Wraps
- 13 Where the rods go decides more than the lotion does.
- Written by
- One person Perming since 1991. No committee, no ghostwriter.
- Costs
- Nothing It is a reference, not a funnel.
It is one idea, done nine ways
A reducing agent opens some of the sulphur bonds that hold your hair in its shape. A rod holds the hair somewhere else. An oxidiser closes the bonds where they now sit. That is every perm ever made.
Everything in this guide is a variation on those three steps — which agent, which rod, which oxidiser, and in what order. Once you have that, the sixty pages below stop being a list and start being a map.
The part nobody is told
The rod decides, not the chemistry
When the bonds close, the sulphur atoms do not find the partners they were separated from. They join whichever neighbour the rod has put them next to. The rod, not the lotion, decides which sulphur meets which — and that is why two people with the same product and the same stylist can walk out looking nothing alike.
The arithmetic
Two and a half turns, or nothing
Hair has to travel round the rod at least two and a half times to form a complete S. Fewer turns give one wide bend that reads as a slightly odd blow-dry. It is not a preference or a school of thought, it is what a wave is — and it means your length sets the largest rod that can work, whatever the photograph says.
The honest bit
It spends something
A perm restructures hair. That is not a coating and it is not reversible, and it is the whole reason the result lasts. Anyone telling you a perm leaves hair healthier than it found it is selling. What I will tell you is what it costs and what you get back, and on which hair the answer is no.
Diagnostics — Whether, before which
Start here. These four decide whether a perm is the right idea at all, and they are the ones I would read before booking anything.
Bleach Damage
Usually no, and usually is doing real work in that sentence — a perm has to rebuild….
Can Your Hair Take a Perm
You can impose a shape on almost any hair, but you cannot impose bounce — bounce is disulphide bond….
Perm vs Relaxer
English has given one word to two opposite services: in Britain a perm puts curl in, and in much….
The Hair Porosity Guide
Porosity is how fast your hair takes a chemical in, and the reading everyone gets backwards is the….
Chemistry — The bottle
Nine reducing agents, and the choice between them is the biggest decision made about your hair on the day — bigger than the brand.
The Acid-Balanced Perm
The middle of the ladder and the default for most heads: buffered thioglycolate just above neutral, worked….
The Air Perm
The perm sold as having no neutraliser, which is not what it is: oxidation still happens, it is simply….
The Alkaline Perm
The strongest chemical curl available: ammonium thioglycolate carried into the hair by an alkali, worked….
The Bond-Protected Perm
A perm with a bond builder mixed into it: a real improvement to how the hair comes out, built on a….
The Cysteine Perm
The cautious first attempt: an amino acid your hair is already built from, used as a mild reducing agent….
The Exothermic Perm
An alkaline perm with a second bottle: an activator mixed into the lotion at the chair makes the mixture….
The Sulfite Perm
The floor of chemical reducing power: a sulfite salt at close to neutral pH, swelling the cuticle almost….
The Thio-Free Cysteamine Perm
The chemistry behind most modern soft waves: cysteamine hydrochloride at close to neutral pH, worked at….
The True Acid Perm
The soft, cuticle-sparing perm invented for coloured hair — a reducing agent so mild it cannot get….
Heat — The machine
Warm rods, and the machines that drive them. The curl that shows up dry rather than wet.
Digital Perm Machines
A digital perm machine is a processor with rods plugged into it, one cable each, run in heating cycles….
The Digital Perm
A digital perm is the only perm that is curliest when it dries.
Techniques — The wind
Where the rods go and which way they turn. This is where a perm is won or lost, and it has nothing to do with the chemistry.
Base Control
The angle at which a section is held before the rod rolls down — and therefore where the finished….
The Beach Wave Perm
The loose, lived-in S-bend wound on large rods: the most-requested perm of the last five years, the most….
The Body Wave
Standard perm lotion on very large rods, wound for root lift and a wide soft bend rather than a defined….
The Brick Lay Perm
Each row of rods is offset over the gap in the row above, exactly as a bricklayer staggers courses, so….
The Croquignole Wrap
The default salon wrap: hair wound from the ends towards the scalp, overlapping itself on the rod, giving….
The Directional Wrap
The grid is abandoned and the rods are mapped onto the haircut instead, so that the roots are set….
The Partial & Spot Perm
Perming one zone of the head and leaving the rest alone: a sectioning decision rather than a chemistry, in….
The Piggyback Perm
Two rods share one strand: the first wound at the mid-lengths down to the scalp, the second carrying the….
The Root Perm
Chemistry confined to the first inch or two at the scalp, the lengths sealed under barrier cream and left….
The Spiral Perm
Long hair wound from the scalp down the length of a long rod, side by side rather than over itself, so the….
The Stack Perm
The top canopy is clipped out and left straight while rods are stacked through the lengths and ends….
The Straight-Set Wrap
The head divided into nine rectangles and the rods rolled in straight columns, each directly behind the….
The Weave Perm
A tail comb takes alternate strands out of each section: those go on the rod, the rest are left straight,….
Tools — The mould
Rods, papers, formers. What each one is actually for, and the arithmetic that overrules all of them.
Benders and Flexi-Rods
A bendable wire in a sleeve of foam holds a wind without an elastic band, which removes a real mechanical….
Concave and Straight Rods
Two rod profiles, and they do genuinely different things: the hourglass funnels hair to its waist and….
End Papers
One square of porous paper, pulled past the longest tip before the rod turns, is the only thing standing….
Foam Rollers and Rag Setting
Winding damp hair on cloth or foam and letting it dry is the oldest way to make a curl there is: it asks….
Rod Sizes and Colour Codes
The colour convention every salon uses, the diameters it roughly indicates, and the piece of arithmetic….
Soft Tools and the American Wave
A soft-tool system is a set of yielding formers, a set of winds and a mild lotion sold together with the….
Specialty Perm Rods
Long straight rods, chopsticks, pen sticks and loop formers — the shapes outside the standard range,….
Regional — The same chemistry, different countries
Korea, Japan, China, Europe. The same bonds, opened the same way, wearing completely different national styles.
Chinese and Southeast Asian Perms
This is where most of the world’s hot perms are actually performed, and the regional practice….
The Down Perm
Every other service in this library adds curl.
The European Perm
The European classic is the cold wave: no machine, no heated rod, nothing but a lotion at room temperature….
The Japanese Perm
Two Japanese ideas changed modern perming: the heated rod on a controlled unit, and a trade classification….
The Korean Perm
A Korean perm is not a bottle.
Brands — The companies
Who makes what, told from patent records and filings rather than from marketing.
ARROJO and the American Wave
A branded texture system built on soft formers rather than hard rods, sold as four different winds of one….
Curl Cult
A modern three-step texture system that is widely described as keeping its chemistry secret, and does not….
Eugene and the British Trade
For about twenty years London was the centre of the world’s permanent waving industry, and what it….
Nessler and Nestle
Karl Nessler invented the permanent wave and then lost the business twice — once to a war and once….
The European Perm Houses
Four European companies kept manufacturing perms through the decades when nobody wanted one, and each….
The Japanese Perm Houses
The modern heated-rod perm is a Japanese commercial product before it is anything else — and the….
Toni and the Home Perm Brands
Two brothers in Saint Paul turned salon chemistry into a household purchase, sold the company four years….
Zotos
No company appears on more of perming’s paperwork than Zotos, and almost none of that paperwork went….
History — Where it came from
From heated tongs to the cold wave, told from the patent record. Several of the stories everyone repeats turn out to have nothing behind them.
Before the Perm
For fifty years a wave was made with a hot iron or a comb and a gum, and it lasted until the hair was next….
Machineless Perms
The waving machine was not killed by the cold wave.
Nessler and the First Perm
The first permanent wave was demonstrated in London on 8 October 1906 and patented on 6 February 1909, and….
The 1980s Perm
The 1980s were the commercial peak of the permanent wave, and the decade is usually remembered for what it….
The Cold Wave
Between the late 1930s and the late 1940s a permanent wave stopped being something a machine did and….
The Home Perm Boom
Once a permanent wave needed nothing but two bottles and a set of plastic curlers, there was no physical….
The Machine Perm Era
Between 1920 and 1939 the permanent wave became an industry, and it did so through a change in geometry….
Now — Where it is
What the perm actually is in 2026, and why it looks nothing like the one you are picturing.
The Modern Perm
The service came back after twenty-five years in exile, and it came back as a different thing: bigger….
Reference — The technical pages
pH, neutralising, scalp health, curl memory. Written for clients; stylists are welcome to read over your shoulder.
Curl Memory and Water
Three questions that turn out to be one: why a curl holds at all, what quietly wears it out over months,….
Neutralising a Perm
The lotion opens the bonds; the neutraliser closes them.
Perms, Scalp and Grey Hair
Two subjects that belong on one page: what a perm does to the skin it sits on, and what it does to hair….
pH and Perms
A perm is one controlled journey up the pH scale and back down it — from hair sitting at about 5, up….
The other names for all this
Permanent waving · cold waving · the permanent · a perm · body wave · texture service · chemical waving · digital perm · setting perm · hot perm.
Permanent waving is the correct trade term and the one the patents use. Nobody says it. It is worth knowing because it is what you will find in the older literature and in the parts of this guide that go back to 1906, and because it says plainly what the service does: the wave is permanent, and only growing it out or cutting it off removes it.
“Body wave” is not a chemistry, whatever anyone tells you — it is standard perm lotion on large rods, and it has its own page explaining why the distinction gets sold as though it were one. The same goes for most of the fashionable names: they are usually a rod size, a placement, or a country’s menu language rather than a different thing happening to your hair.
Questions people actually ask
Where should I start if I have never had a perm?
The four Diagnostics pages, in this order: can your hair take a perm, then hair porosity, then bleach damage if you have ever lightened your hair. They answer whether before they answer which, which is the right way round. After that, Wavement Cold is the service most people are actually asking about.
Is a perm the same thing as a relaxer?
They are opposite directions of the same idea, and they are not interchangeable chemistry. A perm uses thio-family chemistry that opens bonds and reforms them. A hydroxide relaxer permanently removes one of the two sulphur atoms, so there is nothing left for a neutraliser to rebuild. The two must never meet, in either order. There is a page on exactly this.
Can I have a perm on bleached or highlighted hair?
Usually no — and usually is doing real work in that sentence. Bleaching oxidises the sulphur that holds hair together into a form no neutraliser can rebuild, so most bleached or highlighted hair takes a curl that drops out within weeks while the hair pays for it. That is the default and the default is no. But it is a judgement made on the hair in front of me, and occasionally, in the right hands at the right strength, it is possible. Assume no, and come and let me look rather than deciding from a page.
Why does the guide refuse to print a digital perm temperature?
Because there is no single number to print. The working setting is decided by the country's practice and by the hair in the chair — the ranges published in Japan, Korea, mainland China and Taiwan are not the same ranges, and coarse resistant hair and fine hair are not run at the same setting on the same machine. And a number on a website ends up reproduced at home with a curling iron, which is how people get hurt.
How long does a perm last?
It depends almost entirely on rod size, not on the product. Roughly six to eight months on small rods, four to six on mid sizes, two to three on large ones — a large-rod perm is buying you movement, and movement is inherently less durable than a coil. A hot perm sits at the longer end, six to nine months and sometimes more on coarse hair.
What is the single most useful thing in here?
Probably the two-and-a-half wrap rule, because it settles most disappointments before they happen. Then the fact that the rod decides which sulphur meets which, because it explains why the stylist matters more than the brand. Then the aftercare: seventy-two hours, because oxidation carries on in air and the fibre keeps hardening for about three days.
Is any of this behind an email form?
No. All sixty pages are open, and there is nothing to sign up for to read them. If a guide asks for your email before it will tell you something, the something is usually not worth the email.