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  • Before: Tinea Pedis

    Before: Tinea Pedis

    This client exhibits tinea pedis (fungus of the foot).

  • After: Tinea Pedis

    After: Tinea Pedis

    A callus softener was used in the foot care treatment and an anti-fungal formula was recommended for home care to get optimal results.

By: Vicki Malo
Posted: January 2, 2013, from the January 2013 issue of Skin Inc. magazine.

Did you know that the average person takes approximately 10,000 steps a day? This averages out to walking four times around the world and places approximately 600 metric tons of force on the soles of the feet in the course of a lifetime. That is a tremendous amount of stress and pressure on the bottoms of those important, but often neglected, appendages at the end of the legs.

The amount of pressure exerted on the feet gives a good indication that the skin on the soles must be very different than on the rest of the body.

The skin of the soles

The skin of the epidermis on the soles of the feet is much thicker; up to 1.4 mm and comprised of five distinct layers. It has to be thicker to withstand the amount of stress and pressure placed on the soles with every step. There’s more: The skin on the soles of the feet has an additional layer in the epidermis, and the skin cells are packed together in a strong, congruent membrane. The skin on the bottom of the feet also has four times more sweat glands, but does not have hair or sebaceous glands. Due to these functional features of the skin on the soles of the feet, it does not respond as readily to typical skin care techniques practiced elsewhere on the body.

The outermost layer of the epidermis, known as the stratum corneum, is crucial to the skin barrier. Made up of overlapping layers of cells, the stratum corneum keeps vital nutrients in, and damaging substances and elements out. Healthy skin keeps in moisture and protects against the entry of bacteria, fungus or viruses. Unhealthy or dry skin creates a portal of entry, leaving the skin traumatized and unable to perform its job of protection.

Lifestyle and foot issues

So why do you see so many clients with dry skin on their feet? A lot of the reason has to do with lifestyle. Today’s is a fast-paced, high-stress, super-sized lifestyle. Lack of exercise, and a diet high in sugars and simple carbohydrates can lead to a breakdown in the circulation of the lower limbs and increased incidences of diabetes. Lifestyle is the greatest contributor to developing chronic venous insufficiencies (CVI). Venous insufficiencies lead to a disruption in the function of the skin, breaking it down at an intercellular level. There are no capillaries in the epidermis; however, the skin is nourished by diffusion from the capillaries in the underlying dermis. If the capillaries are compromised, proper blood supply (nourishment) cannot be provided to the epidermis of the skin. Impaired elimination of metabolic waste due to CVI impairs the sweat glands, diminishing sweat production on the bottom of the feet. The tissue disturbances further cause a breakdown of the lipids, which are responsible for holding the cells together. The breakdown of the lipids causes the hydrolipid film to break down, leading to transdermal water loss. The skin loses elasticity and has less potential for regeneration. The intercellular water loss compromises the integrity of the skin leading to micro lesions, such as dry skin. Micro lesions are a portal of entry and can cause skin issues, such as athlete’s foot.

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