The skin is a two-way membrane allowing an exchange of moisture and air in and out of the body. Toxic materials can easily penetrate the skin when it is exposed to solvents, fixative paints, fertilizers, pollutants and other air- or water-borne chemicals.
The skin is a vital organ and must eliminate toxic materials daily just as the bowl and lungs. In fact, they say we should eliminate about two pounds of waste per day from the skin. By wearing heavy, close-fitting clothing, the skin backs up in its ability to eliminate these toxic substances.
This is also believed to be caused by thinning of iris fibers in that zone, and is also considered a structural sign. It is a genetic sign and does not go away. It may lighten up some with proper care and treatment of the skin, but never really goes away entirely. It may indicate a potential tendency for skin conditions such as ache, psoriasis, and eczema to name a few.
There are several ways to help the skin if you know you have this sign. You could, prior to bathing, use a skin brush to help open the pores, make sure you limit the amount of lotions that you use. This tends to close the pores and not allow the skin to breath. Wear fairly loose clothing will also allow skin breathing. If you have access to a steam sauna, the heat and steam may also be help in the long run.
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Reference: Jensen, B. (1980). Iridology Simplified. Escondido, CA.