question: why is skin dryer after being wet and drying?
comment: Because you've washed the oils off of your skin. Your natural skin oil acts as a moisturizer, and doesn't evaporate nearly as easily as water would. Washing your skin replaces these oils with water which does evaporate easily, leaving your skin temporarily without sufficient water or oil.
passages: Dry skin results from lack of water in the outer layer of skin cells (the stratum corneum). When this layer becomes dehydrated it loses its flexibility and becomes cracked, scaly and sometimes itchy. The stratum corneum contains natural water-holding substances that retain water seeping up from the deeper layers of the skin, and water is also normally retained in the stratum corneum by a surface film of natural oil (sebum) and broken-down skin cells, which slow down evaporation of water from the skin surface. Diprobase works by increasing that layer of oil.
  
  Section::::Manufacturer.
   Skin wettedness is defined as "the proportion of the total skin surface area of the body covered with sweat."
   Section::::Non-ideal rough solid surfaces.:Cassie–Baxter model.:"Petal effect" vs. "lotus effect".
   Section::::Effect on environment.
   Before the drying process begins, the mango that has been sliced will usually have moisture on the surface. In the drying process, warm air that has little moisture will be used to pick up the moisture on the surface of the sliced mango. As the water on the surface is being evaporated, the water from inside the mango is also being drawn out to the surface to replace the lost moisture. The process of water being drawn out from the center of the material to the surface is called diffusion. Then the moisture will also be taken away by the warm air. As moisture is being drawn out to the surface, moisture on the surface will be less visible until it reached a point where the surface will no longer look wet. The rate of moisture removal will also be slower as time goes on. As moisture is being drained out of the mango, its cellular structure will begin to break down, causing the mango to shrink. At high temperature, moisture can be drawn out too quick that a thick hard layer is formed in the surface of the mango. The thick layer will trap moisture inside the mango making it really difficult to entirely dehydrate the mango. This phenomenon of developing hard skin-like outer layer is called case-hardening.
   Most drying oils rapidly increase in viscosity after heating in the absence of air. If the oil is subjected to raised temperatures for a long time, it will become a rubbery oil-insoluble substance.
  
  Section::::Chemistry of the drying process.:Role of metal catalysts.
   Ticks, biting flies, and contact with other infected animals also causes the spread of rainscald. Once in the skin, the bacteria cause inflammation of the skin as well as the typical symptoms associated with rainscald.
  
  Section::::Symptoms.
   Today, many creams and lotions, commonly based on vegetable oils/butters, petroleum oils/jellies, and even lanolin are widely available. As a preventive measure, such products may be rubbed onto the affected area as needed (often every other day) to prevent dry skin. The skin is then patted dry to prevent removal of natural lipids from the skin.
  
  Section::::Treatment.
   Mud fever is caused by an infection of the skin by bacteria, including "Dermatophilus congolensis", and often "Staphylococcus spp." Dermatophytes (fungal organisms such as "Malassezia" or "Trichophyton") can also contribute, as can chorioptic mange mites. Photosensitivity or irritant contact may contribute in certain cases. Rarely, vasculitis can cause continued inflammation.
   Keratolysis exfoliativa normally appears during warm weather. Due to excessive sweating and friction, in for example athletic shoes, the skin can start to exfoliate. Other factors that can cause exfoliation are detergents and solvents.
  
  Another very common cause has been reported from salt water fishermen, who often suffer from these symptoms. It is not sure whether it is from the salt water or whether it is from some bacteria from fish.
  
  Section::::Treatment.
   Effects of flooding on skin
  
  There are several different types of skin conditions that may result from flooding.
   A plant fibre (or other hydrophilic material) that has been exposed to the atmosphere will usually contain some water even if it feels dry. The water can be driven off by heating in an oven, leading to a measurable decrease in weight, which will gradually be regained if the fibre is returned to a 'normal' atmosphere. This effect is important in the textile industry, where the proportion of a material's weight made up by water is called the "moisture regain". 
   In many cases, the underlying form is simply the phonemic form. For example, in many varieties of American English, the phoneme in a word like "wet" can surface either as an unreleased stop or as a flap , depending on environment: "wet" vs. "wetter". (In both cases, however, the underlying representation of the morpheme "wet" is the same: its phonemic form .)
   One factor that determines whether skin is dry or oily is the amount of sebum produced by the skin. Sebum creates a fat-based film on the skin, which may also have an effect on skin hydration. The state of the skin’s stratum corneum plays a role in determining whether one is dry or oily as well, since this barrier layer also helps hold moisture in the skin.
   The action of liming, in particular the swelling of the skin, results in the splitting of the fibre bundle sheath. Owing to the fibre diameter increasing, the bundle sheath cannot contain the thicker fibres, and it bursts open. This allows increased access to the fibres, which allows better tanning, retanning, dyeing and fatliquoring.
   Chafing may be caused by the salt and residue left behind after sweat evaporates. If sweat is allowed to dry, and exercise is resumed, the salt may intensify the friction and cause further irritation. Other contributing factors include hot weather, sensitive skin, sand from the beach getting into problem areas, and prior skin irritation.
  
  Section::::Prevention and treatment.
   Dryness (medical)
  
  Dryness is a medical condition in which there is local or more generalized decrease in normal lubrication of the skin or mucous membranes. 
  
  Examples of local dryness include dry mouth, dry eyes, dry skin and vaginal dryness. These often have specific causes and treatments. It is possible to have dry eyes without any other signs or symptoms, but this usually causes a syndrome of eye symptoms called keratoconjunctivitis sicca.
  
  More generalized dryness can be caused by e.g. dehydration (that is, more general loss of body fluids), anticholinergic drugs and Sjögren syndrome.
   In what has been described as "primary efflorescence," the water is the invader and the salt was already present internally. Some people describe a reverse process, where the salt is originally present externally and is then carried inside in solution, as "secondary efflorescence." However, others would give this latter phenomenon another name entirely.
   Section::::Process.
   Section::::Alkaline collagen swelling.
  
  The presence of calcium hydroxide results in the alkaline swelling of skin. The result is an influx of water into the hide/skin, and a marked increase in fibre diameter and fibre shortening. The thickness of the skin increases, but the surface area of the pelt decreases. The weight increase, owing to the uptake of water, results in a doubling of the hide/skin weight. However, this weight also needs to take into consideration that proteins (especially the hair) have been removed, and the fleshing operation is often performed after liming.
  
  Section::::Collagen fibre bundle splitting.
   R Sayre was the lead researcher of "in vitro" SPF testing for regular summer fabrics. This revealed that traditional summer clothing in North America offered less than 15 SPF protection, the minimum level recommended by doctors. These regular summer fabrics tested between SPF 59 when dry and SPF 39 when wet. Nicholas Lowe and R Sayre followed this up with "in vivo" research. They found that Solumbra achieved over 50 SPF when dry or wet.
   Section::::Dry skin (xerosis).
  
  Dry skin (xerosis) involves increased thickness of stratum corneum (hyperkeratosis), which may occur due to various reasons including aging, humidity of the environment or UV irradiation. The accumulation of corneocyte clumps on the surface of the skin may lead to abnormal detachment of squames as visible clusters. Xerosis is common, especially in elderly individuals which may be due to decreased quantity of free amino acids, a constituent of natural moisturizing factor. Consequently, many moisturizers in the markets incorporate the components of the natural moisturizing factor as well as keratin and elastin.
  
  Section::::Localization.
   Section::::Implementation and operation.:Operation technique.
   Section::::Drying mechanism.
   Section::::Methods of drying.
  
  The following are some general methods of drying:
  