Perm (hairstyle)

Perm (hairstyle)

A permanent wave, commonly called a perm, is the chemical and/or thermal treatment of hair to produce waves or curls. The use of the word 'permanent' is justified insofar as when the wave is permed, it remains so; however, as the hair grows, the new hair that grows has not been waved, while cutting the hair from the end removes that which is waved, giving the impression that the permanent wave gradually disappears. In cosmetology, it is termed a type of curl reformation.


Historically, women have wished to have wavy or curly hair which seemed more attractive than the more common straight hair. Attempts to curl it by wetting and winding or tying with paper produces only superficial effects. So called [ water- or finger- waving or setting] can be produced by manipulating the wet hair with the fingers, using a viscous lotion (generally made with gum tragacanth) to hold it in place. Washing would immediately destroy the waving. High temperatures were known to be effective for waving hair but impractical unless applied to hair separated from the scalp, which is how wigs were made.

The first person to produce a practical thermal method was Marcel (Grateau)] in 1872. [Ed. Foan, G.A & Bari-Woolls, J., "The Art and Craft of Hairdressing, Pitman, 1938. There were three editions and the second (1938) edited by Bari-Woollss is strongly recommended for this subject.] He devised a pair of specially manufactured tongs, in which one of the arms had a circular cross-section and the other a concave one, so that one fitted inside the other when the tongs were closed. The tongs were generally heated over a gas or alcohol flame and the correct temperature was achieved by testing the tongs on a newspaper - if the paper browned slightly it was about right. The waving itself was safe if care was taken to keep the tongs away from the scalp. The procedure was to comb a lock of hair towards the operator moving the comb slowly with one hand to maintain some tension, while with the other hand applying the tongs to the hair successively down the lock of hair towards the point. Each time the tongs were applied, they were move slightly in a direction normal to the lock of hair, thus producing a continuous flat or two-dimensional wave. Skill using the wrist could produce slight variations of the wave. Thus, Marcel waving produced a two-dimensional wave, by thermal means only and the change was produced by plastic flow of the hair rather than by any chemical means. Because of the high temperature used, the process tended to degrade the hair. However, in spite of its drawbacks, forms of Marcel waving have persisted until today, when speedy results and low cost are important [ [ victorian piece 1 ] ] .

Until the start of the twentieth century, women's hair was not cut, but as the demand for self-determination grew amongst women, it was shortened so that it did not pass the lower end of the neck. This was not only a political gesture but a practical one as women began to take over men's work due to the great shortage of labour during the First World War (see Suffragette). At the same time, electricity which at first had been introduced mainly for lighting and industrial use, began to be used for heating and the application of the electric motor at the small business and domestic level. As shorter hair was improved in appearance by waving even more than long hair, it was only a matter of time before an improved form of waving appeared.


An early alternative method for curling hair that was suitable for use on people was invented in 1906 by German hairdresser Charles Nessler (1872–1951). He used a mixture of cow urine and water. The first public demonstration took place on October 8, 1906, but Nessler had been working on the idea since 1896. Previously, wigs had been set with caustic chemicals to form curls, but these recipes were too harsh to use next to human skin. His method, called the spiral heat method, was only useful for long hair. The hair was wrapped in a spiral around rods connected to a machine with an electric heating device. Sodium hydroxide, a strong alkali, was applied and the hair was heated (212°F; 100°C or more) for an extended period of time. The process used about twelve, two-pound brass rollers and took six hours to complete. These hot rollers were kept from touching the scalp by a complex system of countering weights which were suspended from an overhead chandelier and mounted on a stand. His first experiments were conducted on his wife, Katharina Laible. The first two attempts resulted in completely burning her hair off and some scalp burns, but the method was improved and his electric permanent wave machine was used in London in 1909 on the long hair of the time.

Nessler had moved to London in 1901, and during World War I, the British jailed Nessler because he was German and forced him to surrender his assets. He escaped to New York City in 1915, buying passage on a steamship under an assumed name. In New York, he found that hundreds of copies of his machine were in use, but most did not work well and were unreliable. Nessler opened a shop on East 49th St., and soon had salons in Chicago, Detroit, Palm Beach, Florida and Philadelphia. Nessler also developed a machine for home use that was sold for fifteen dollars. However, his machine made little impression in Europe and his first attempts were not even mentioned in the professional press, perhaps because they were too long-winded, cumbersome and dangerous.

Eugene Suter and Isidoro Calvete

It is interesting that while many of the persons who were influential in the early and creative days of this technique were not British, but European, most of the seminal developments in the field seemed to have started and developed in the West End of London.

Eugene Suter was a Swiss immigrant who set up a fashionable ladies' salon in London's West End. He claimed to have come from Paris, which in those days was the centre of fashion and style. He became aware of the possibilities of electrical permanent waving particularly now that shorter hair allowed the design of smaller equipment. The system had to be considered in two parts; one was the electric heater and the other was the system of winding and holding the hair on a former which was inserted each time into the heater. Suter tried to design a heater but was unsuccessful.

Isidoro Calvete was a Spanish immigrant who in 1917 in the same area of London set up a workshop for the repair and manufacture of electrical equipment which were just coming into use, for the hairdressing and medical professions. Suter consulted him on the heater and Calvete designed a practical model consisting of two windings inserted into an aluminium tube. This ensured that when inserted over a root winding, the thicker hair nearer to the root became hotter than the thinner hair at the end. Suter patented the design in his own name and for the next 12 years ordered all his hairdressing equipment from Calvete but marketed under his commercial name, Eugene Ltd, which became synonymous with permanent waving throughout the world. At the same time, Calvete developed his own products which he manufactured under the name Icall, Ltd. The simultaneous manufacture of two competing lines would inevitably result in conflict.

From the onset, Eugene realised the importance of the United States market and made great inroads, challenging Nessler who had started up there. The former also sued the latter for infringing the patent which he had taken out based on Calvete's design, and won his case. Nessler was to retaliate some years later suing Eugene in the United Kingdom, over some curlers designed by Calvete which were similar to the Nessler ones.

Development of the heaters

The first heaters as described above were tubular, and were inserted over the hair which had been previously wound on to a former or curler. To facilitate this, after a preliminary preparation of the hair, such as washing, cutting or tapering, the hair was combed into up to about 22 sections or locks, a process known a sectioning or squaring off. The each lock was then wound on to the curler which was basically a rod which stood upright from the head, starting at the bottom of the curler using the hair nearest the scalp; hence this method was known as root winding, and the hair was wound spirally up the curler. Considerable ingenuity was exercised in designing the curler to minimise the work entailed in winding. In early models, the heaters tended to flop on to the head, but with improved curlers, they tended to point outwards (see illustration).

A second type of curler was invented later, allegedly in 1924 by a Czech hairdresser, Josef Mayer. In this method, the hair was fed through a small clamp which after winding would hold the two ends of a roller. The ends of the hair were held on the roller which was until it reached the clamp into which it was inserted. For obvious reasons, this was called point-winding. Calvete designed a new type of heater for this called a croquignole heater which fitted over the winding, rather like a bulldog clip. The trend was to replace some of the tubular heaters on the sides of the head with croquignole ones, to allow greater scope of styling.

Development of the units

Apart from portable models which became available later, some system of support was necessary for the curlers. At first these were fixed to the ceiling, but these were soon replaced by a machine which was universally adopted. A vertical metal pipe held a circular unit, called a 'chandelier' from which the heaters were suspended. The bottom of the pipe was mounted on a base with wheels which enabled the device to be moved easily between clients or to one side of the salon. The chandelier took some of the weight of the heaters and kept them tidy; it also facilitated the electrical connection, and the cables to the heaters also took some of the weight of the curlers.

Because of expense, the early models only had a few tubular heaters, and permanent-waving process took place in more than one stage. As the process became more popular and competitive, a whole head of hair could be processed in one go, using up to 22 heaters, some of which might be croquignole.

Development of the "reagents"

Although heat was required for perming, it was soon realised that if an improvement had to be made over the Marcel method, other means were necessary to avoid overheating and to speed up the waving process. The use of water on its own was an obvious choice, particularly as the hair was already wet from washing, for no other reason than that it prevented overheating, and that steam seemed to improve the process (hence the expression 'steaming time'). It was not long before experiments were carried out by the use of additives, and it was soon apparent that alkaline ones helped.

Thus the profession started using what was called a 'reagent',perhaps concocted by the hairdresser himself or sold commercially by the manufacturers of the machine. A common ingredient was borax or ammonia, which are mildly alkaline (and thus have a high pH) but are relatively harmless.


Until about 1930, most progress was empirical, that is, each hairdresser tended to use a method which he had found to be useful. By then, although some academic work had been carried on hair, Calvete felt that more research should be carried on the chemistry of hair and engaged a chemist who specialised in the subject, called Bari-Woollss. He carried out controlled experiments on known factors such as the effect of heat, water/steam and alkalinity and experimented on variations of the winding process, such as the type of hair, the tension or tightness of winding, the flatness of winding, the overlap and pitch. [* Bari-Woollss, J., "The Manual of the Permanent Waver 1st edition", Westminster City Publishing Co., August 1934] His practical lectures on the subject proved highly popular amongst hairdressing professionals, and he wrote a book on the subject.

Certain basic factors he pointed out are still relevant today. A point winding, is almost two dimensional, rather like the spring of a watch spiral. A root winding is three-dimensional rather like a spiral staircase, more properly a helix. Thus point winding tends to produce more of a curl, but both produce waved hair when pulled slightly. Point produces a thicker winding and so heat takes longer to penetrate the core of the winding. Root winding is heated over a greater length and the thickness of the winding will depend on the overlap between turns.

Bari-Woollss was probably instrumental in introducing a new factor: reduction. In chemistry, this is the opposite of oxidation and can mean the removal of oxygen or, in this case, the addition of hydrogen, which by breaking the bonds of the keratin in the hair, allowed waving to take place more easily. This resulted in addition of a sulphite, bisulphite or metabisulphite to Icall reagents, sulphur dioxide, a reducing agent, being evolved on heating. The only alternative to sulphites at the time would have been mercaptans which are unpleasant to use. However, later alternatives were found which led to the development of cold-waving. Bari-Woollss left Icall in about 1934 to take over the editorship of an encyclopaedic volume on womens' hairdressing.

Developments after 1930

By 1930, the process of permanent-waving was well established and its importance can be gauged if one considers that the majority of middle-class women, at a rough estimate, had their hair set once a week and permed perhaps once every three months as new hair replaced the waved hair. Meanwhile, hairdressers sought to improve the process and reduce the work involved; this meant savings at the lower end of the market and yet more women getting their hair permed. This was also stimulated by pictures of the rich and famous, particularly film stars, who all had their hair permed.

This resulted in many copies of the original equipment being made by reputable firms in some cases with innovations of their own:

Nestlé. Nessler re-entered the British market under this name introducing the "Radione" system in which the hair was wound dry and inserted into hollow cellophane tubes sealed at both ends but contained moistened paper. Also introduced the "oleum" system in which water was replaced by oil.

Macdonald. A revolutionary system as it did not use direct electrical heating. Steam was generated in a separate kettle, or later in small individual kettles, the steam being led by tubes to each 'heater'. Arrangements had to be made to remove the water which was condensed, but there was no risk of over-heating nor of electric shock, but scalding was a risk.

Gallia originated by J. Metelski, is credited with first moistening the hair with a reagent. which gave better results but made winding more difficult. It was said to be a very fast system.

Superma originated by Sartory, was a machineless system which relied on the chemical reaction of the contents of a cotton pad, with water. Temperature control was rather more difficult but the method was popular in the United States perhaps because electricity was not used.

Wella-Rapide was a German system which used croquignole heaters exclusively. A chandelier was not used and for safety worked at a reduced voltage.

Frigidine was one of the few, apart from Icall, to use a timing mechanism and Bakelite heaters.

Vapeur Marcel was a French machine based on the same principles as the MacDonald.

The manner in which reagents worked when applied to the hair and heated, was not only due to the chemicals they contained, but also the effect of the water. Water not only played a part in 'steaming' the hair, but there was better heat control, because while there was water, the temperature hardly passed 100oC. However, this evaporated the water, and it was found that by wrapping the windings with aluminium foil, the hair stayed moist for longer, and also kept the windings upright, facilitating the addition of the heaters.

A further advance was the use of so-called 'sachets', a misnomer because they were small absorbent pads containing certain chemicals, attached to foil or other waterproof material such as vegetable parchment ( The sachets were placed in water and then wound rapidly round the curlers. These were popular with hairdressers as a labour-saving device, and with manufacturers, as they were only used once and some 20 would be used for a head of hair.

There were also changes in the equipment. Icall pioneered the use of plastics in hairdressing equipment, specifically a thermosetting plastic, Bakelite which was used not only because of its electrical properties in the windings of motors and heaters, but in the outer coverings of the heaters. They were less affected by corrosion and were less likely to burn the fingers of the hairdresser. Icall also used Bakelite for the outer casings of hand-held hair-dryers and also for the large linings of pedestal hair-dryers.

It can be imagined that at a time when electrical installations were not to today's standards and at one time were not even earthed, the application of electrical windings to wet hair resulted in enough accidents to worry women. Icall developed what was called the 'wireless' system, in which the electric lead to the heater was replaced by a cord which took the weight of the heater, and the heater was heated by plugging into a socket in the chandelier. Outwardly, the machine looked similar to the earlier model, but at no time was there an electric potential near the head.

Also during this time, in the United States a machineless method that applied preheated clamps over the wrapped rods was invented, In 1931, at the Midwest Beauty Show in Chicago, Ralph I. Evans and Everett G. McDonough showed a heatless system for the first time. Their method used bi-sulfide solution and was often applied at the salon, left on while the client went home and removed the next day, leading it to be called the overnight wave.

With the outbreak of the Second World War in 1939, all production of such equipment stopped in Europe and hardly recovered afterwards, being replaced either by home heater kits or cold-waving methods.

Modern perms

In 1938, Arnold F. Willatt invented the cold wave, the precursor to the modern perm. It used no machines and no heat. The hair was wrapped on rods and a reduction lotion containing ammonium thioglycolate was applied. This chemical breaks open the disulfide linkages between the polypeptide bonds in the keratin (the protein structure) in the hair. The disulfide bonds give hair its elasticity, and can be reformed with chemicals. Next, an acid neutralizer lotion was applied, (hydrogen peroxide), to close the disulfide bridges again and the hair was reformed to the shape of the rod. The entire process took 6-8 hours at room temperature.

Perms today use this method with sodium thioglycolate instead of ammonium thioglycolate, at a pH of 8 to 9.5. This method takes only 15-30 minutes until the neutralizer is applied to bring down the pH and rebond the hair.

In the 1970s, acid perms were invented. These use glycerol monothioglycolate instead and contain no ammonia. They are sometimes called buffered waves. This perm is slower but gentler to the hair. Heat is usually added by placing the client under a dryer, after covering the wrapped head with a plastic cap. The reaction is endothermic and the additional heat causes the pH to rise from 6.9 to 7.2.

Other types of modern perms include exothermic perms, which are self timing and self heating; and neutral, or low pH, thioglycolate free perms.

The permanent relaxer straightens the hair instead of curling it. The same chemical methods can be used for this, but the hair is not wrapped around rods. This process is commonly used by African-Americans and others with naturally curly or kinky hair.

Digital perms were introduced in the 21st century and in use especially in modern Asian cultures. The process was patented and invented by a Japanese company, Paimore Ltd. [ [ Paimore Ltd. website in Japan] ]

Technical considerations

There are two parts to a perm, the physical action of wrapping the hair, and the chemical phase. Both of these can affect the result. Important physical variables involved are what type of rod is used, how the hair is wrapped and how end papers are used. The two most common types of rods are straight and concave; each giving a different curl effect. The wrapping method is either spiral or croquinole, and various types and positionings of end papers can be used with any combination of the above. Generally, smaller rods will produce smaller, tighter curls and increase the appearance of shortening the hair.

The chemical solution used in the perming process is determined by the client's hair type and the pH of the solution.Classic alkaline perms are used for stronger, coarser hair. They work at room temperature and usually contain ammonium thioglycolate in the pH range of 9-10. Acid perms are used on more delicate or thinner hair. They require outside heat application and usually contain glycerol monothioglycolate in the pH range of 6.5-8.2.
thumb|right|300x|Permanent_wave_machine_invented_in_1928_by_Marjorie Joyner - The first African American woman to receive a patent]

afety considerations

Due to the harsh nature of the chemicals, it is important that contact with the skin be minimized. Modern chemicals are less irritating, but measures should still be taken to reduce contact with anything other than hair.

A poorly performed permanent wave will result in breakage of the disulfide bonds through chemical reduction, because it fails to fix the newly formed bonds. This results in hair that is no longer elastic and flexible, but brittle and fragile. At this point, even combing the hair will result in hair loss. The hair shafts will experience fracture where they exit the scalp. Because the bulb of hair has not been removed though, the hair follicle is not damaged and the hair will regrow; however, the temporary hair loss may be distressing.

Home perms

A number of brands of home permanent kits are available, but their numbers have decreased as permanent waves are not as popular as they were in the 1980s. The first popular home permanent was the Toni brand. The Toni company used a set of twins to advertise their products — one with a salon perm and one with the home perm. Another brand that was a household name in Britain in the late 1960s and 1970s was Twink.



* Calvete, I.B., "Personal Diaries held by Louis Calvete", 1921 to 1965
* Calvete, I.B., British Patent Specification 422,439 "Improvements in Electric Heaters for Waving and Curling the Hair"., 11th January 1935.
* Nessler, Charles of C. Nestle Company, Self-published, "Hair types and how to curl hair using the circuline process", 1926
* "The Hairdressers' Weekly Journal", Published weekly for 'Hairdressers, Wigmakers and Perfumers' since 1881, covering all aspects of contemporary hairdressing and is therefore an invaluable and authoritative source. An almost complete set to the present day is held by the London College of Fashion, 20 John Prince's Street, London.
* Cox, C., "Good Hair Days - A History of British Styling", Quartet Books, 1999.
* Franbourg A., Hallegot P., Baltenneck F., Toutain C. and Leroy F., "Current research on ethnic hair", Journal of the American Academy of Dermatology, June 2003, pp 8115–8119. 16 references. (Available on internet).
* Martin K., "4. Infrared and Raman Studies of Skin and Hair: A review of cosmetic spectroscopy", The Internet Journal of Vibrational Spectroscopy Vol 3 Ed 2 2004, 45 references.
* Calvete, L.G., "Permanent Waving: The Golden Years", Publish and be damned, Toronto, Canada, 2007 | ISBN 1-897312-34-2
* Liu, Christine, "Le Gala Hair Group: Introducing the digital perm", Boston's Weekly Dig, Wednesday, January 31, 2007, Issue 9.5.

External links

* [ Pictures of Nessler's permanent curling machine]
* [ Disulphide bonds in hair]
* [ The chemistry of a permanent wave]

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