Shaving soap (sometimes called a shaving puck) is a hard
soap
Soap is a salt (chemistry), salt of a fatty acid (sometimes other carboxylic acids) used for cleaning and lubricating products as well as other applications. In a domestic setting, soaps, specifically "toilet soaps", are surfactants usually u ...
that is used to produce lather with a
shaving brush. The lather it produces is used to coat the face during
shaving
Shaving is the removal of hair, by using a razor or any other kind of bladed implement, to slice it down—to the level of the skin or otherwise. Shaving is most commonly practiced by men to remove their facial hair and by women to remove the ...
, softening the hair in preparation for shaving.
While shaving soap produces plenty of dense and long-lasting lather, its use in modern times is less widespread and has been overtaken by various types of
shaving cream.
History
Hard shaving soaps in their modern form have existed since at least the early 19th century. Williams (a common American shaving soap intended for use in a
mug
A mug is a type of cup, a drinking vessel usually intended for hot drinks such as: coffee, hot chocolate, or tea. Mugs usually have handles and hold a larger amount of fluid than other types of cups such as teacups or coffee cups. Typically ...
rather than a scuttle) has been produced since 1840, and a US patent for a
shaving scuttle for use with a hard soap was granted in 1867.
[J. P. Brooks and J. McGrady "Improvement in shaving-cups" Issue date: July 1867] Shaving sticks (shaving soap formed into a cylinder) have existed at least since the mid-19th century.
The 21st Century has seen a pop culture renaissance of
Wet Shaving and thus, shaving soaps have become increasingly popular, with multiple brands being established to exclusively sell the product.
Appearance
Traditional shaving soap is often sold as a round puck, either with a rounded bottom intended for use with a
shaving scuttle or a flat bottom for use in a
mug
A mug is a type of cup, a drinking vessel usually intended for hot drinks such as: coffee, hot chocolate, or tea. Mugs usually have handles and hold a larger amount of fluid than other types of cups such as teacups or coffee cups. Typically ...
. High-end soaps may be sold with their own dishes, typically made of either wood or ceramic, and be formed to fit the dish with which the puck is sold. Shaving soap may also be formed in a stick, sold either in a plastic tube or wrapped in foil or paper. Shaving soap is more rarely sold as rectangular bars (as is common with body soap).
Use
A hard shaving soap is used with a
shaving brush to create lather for shaving. For soap in the form of a puck or bar, the brush is first soaked in water and then swirled vigorously over the surface of the soap, causing moist soap to coat the brush's bristles. The brush is then transferred either to a separate bowl or to the shaver's face to be lathered.
Shaving sticks are typically used by rubbing the exposed end of the stick across the shaver's face, coating the face with soap. The soap is then lathered with a moistened brush. Owing to their compact form and ease of use, shaving sticks are popular for use while traveling.
Ingredients
Shaving soap is produced like a
traditional soap with an ingredient selection oriented to producing a stable, slick lather. Its manufacture often differs slightly from normal bath soap in that both
potassium hydroxide
Potassium hydroxide is an inorganic compound with the formula K OH, and is commonly called caustic potash.
Along with sodium hydroxide (NaOH), KOH is a prototypical strong base. It has many industrial and niche applications, most of which utili ...
and
sodium hydroxide
Sodium hydroxide, also known as lye and caustic soda, is an inorganic compound with the formula . It is a white solid ionic compound consisting of sodium cations and hydroxide anions .
Sodium hydroxide is a highly corrosive base (chemistry), ...
may be used as
saponification
Saponification is a process of cleaving esters into carboxylate salts and Alcohol (chemistry), alcohols by the action of aqueous alkali. Typically aqueous sodium hydroxide solutions are used. It is an important type of alkaline hydrolysis. When the ...
agents.
Sodium hydroxide
Sodium hydroxide, also known as lye and caustic soda, is an inorganic compound with the formula . It is a white solid ionic compound consisting of sodium cations and hydroxide anions .
Sodium hydroxide is a highly corrosive base (chemistry), ...
creates a harder soap such as is used in pucks, where
potassium hydroxide
Potassium hydroxide is an inorganic compound with the formula K OH, and is commonly called caustic potash.
Along with sodium hydroxide (NaOH), KOH is a prototypical strong base. It has many industrial and niche applications, most of which utili ...
facilitates creation of a softer soap which loads on the brush more easily. Historically,
tallow
Tallow is a rendered form of beef or mutton suet, primarily made up of triglycerides.
In industry, tallow is not strictly defined as beef or mutton suet. In this context, tallow is animal fat that conforms to certain technical criteria, inc ...
has been a popular ingredient in shaving soaps and is still in use in some traditional products.
Palm oil
Palm oil is an edible vegetable oil derived from the mesocarp (reddish pulp) of the fruit of oil palms. The oil is used in food manufacturing, in beauty products, and as biofuel. Palm oil accounted for about 36% of global oils produced from o ...
is frequently used as a substitute for tallow where
animal fat
Animal fats are lipids derived from animals which are used by the animal for a multitude of functions, or can be used by humans for dietary, sanitary, and cosmetic purposes. Depending on the temperature of the fat, it can change between a solid s ...
s are not desired. Other oils such as
coconut oil
Coconut oil (or coconut fat) is an edible oil derived from the kernels, meat, and milk of the coconut palm fruit. Coconut oil is a white solid fat below around , and a clear thin liquid oil at higher temperatures. Unrefined varieties have a disti ...
are commonly used. Component
fatty acid
In chemistry, in particular in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated and unsaturated compounds#Organic chemistry, saturated or unsaturated. Most naturally occurring fatty acids have an ...
s such as
stearic acid
Stearic acid ( , ) is a saturated fatty acid with an 18-carbon chain. The IUPAC name is octadecanoic acid. It is a soft waxy solid with the formula . The triglyceride derived from three molecules of stearic acid is called stearin. Stearic acid ...
are also used in shaving soaps for the properties which they contribute; stearic acid contributes to a more stable dense lather.
Advantages and disadvantages
The primary advantages of shaving soap over aerosol shaving creams is the additional hydration provided by shaving soaps.
Shaving soaps are also approved by the
Transportation Security Administration
The Transportation Security Administration (TSA) is an agency of the United States Department of Homeland Security (DHS) that has authority over the security of transportation systems within and connecting to the United States. It was created ...
and other airport security agencies as permitted in
carry-on luggage. There is furthermore little risk of accidental discharge of the product during transport.
The principal disadvantages of shaving soap is lack of convenience and space. Creating the lather and preparing the face is more time-consuming than with other shaving creams. In addition, use of a shaving mug and optionally a lather bowl, consumes more space and takes more time than most shaving creams do. Some people choose to dispense with the mug and bowl and build up the lather from shave soap directly on the skin of the face.
Shaving soaps typically cost more initially, when the shaving mug and soap is purchased. These costs can be significantly reduced by using mugs and bowls found in the kitchen, or purchased for a small amount at resale stores. Even though shaving soaps may cost more initially when buying the soap and equipment, over a longer period of time, shaving soaps are comparable in cost, or even cheaper than many shaving creams. Furthermore, shaving soaps have less ecological impact with respect to aerosol shaving creams.
See also
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Aftershave
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Barber
A barber is a person whose occupation is mainly to cut, dress, groom, style and shave hair or beards. A barber's place of work is known as a barbershop or the barber's. Barbershops have been noted places of social interaction and public discourse ...
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Bay rum
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Beard
A beard is the hair that grows on the jaw, chin, upper lip, lower lip, cheeks, and neck of humans and some non-human animals. In humans, beards are most commonly seen on pubescent or adult males, though women have been observed with beards ...
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Burma-Shave
Burma-Shave was an American brand of brushless shaving cream, famous for its advertising gimmick of posting humorous rhyming poems on small sequential highway roadside signs.
History
Burma-Shave was introduced in 1925 by the Burma-Vita compa ...
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Colognes
Eau de Cologne (; German: ''Kölnisch Wasser'' ; meaning "Water from Cologne") or simply cologne is a perfume originating in Cologne, Germany. Originally mixed by Johann Maria Farina (Giovanni Maria Farina) in 1709, it has since come to be a generi ...
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Head shaving
Head shaving is a form of body modification which involves shaving the hair from a person's head. People throughout history have shaved all or part of their heads for diverse reasons including aesthetics, convenience, culture, fashion, practicalit ...
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Leg shaving
Leg shaving is the practice of removing leg hair by shaving the hair off using a razor or electric shaver. In addition, some people remove leg hair using waxing, sugaring, depilatories, epilators or other depilation devices, or lasers, bu ...
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List of cleaning products
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Razor
A razor is a bladed tool primarily used in the removal of body hair through the act of shaving. Kinds of razors include straight razors, safety razors, disposable razors, and electric razors.
While the razor has been in existence since be ...
s
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Saltwater soap
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Shaving cream
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Straight razor
A straight razor is a razor with a blade that can fold into its handle. They are also called open razors and cut-throat razors. The predecessors of the modern straight razors include bronze razors, with cutting edges and fixed handles, produced ...
References
Bibliography
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{{Human hair
Soaps
Shaving implements