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Long-wavelength UV is more prevalent, but each milliwatt at 295 nm produces almost 100 times more sunburn than at 315 nm. Skin peeling on the upper arm as a result of sunburn – the destruction of lower layers of the epidermis causes rapid loss of the top layers Tanning of the forearm (visible darkening of the skin) after extended sun exposure
Dermatologists explain the safest sunburn blister treatment, plus why you shouldn’t pop them. Sun blisters are a sign that real UV damage has been done. Dermatologists explain the safest sunburn ...
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Scale forms on the skin surface in various disease settings, and is the result of abnormal desquamation. In pathologic desquamation, such as that seen in X-linked ichthyosis, the stratum corneum becomes thicker (hyperkeratosis), imparting a "dry" or scaly appearance to the skin, and instead of detaching as single cells, corneocytes are shed in clusters, which forms visible scales. [2]
Short-term over-exposure can cause snow blindness, which is analogous to sunburn of the cornea, or can cause solar retinopathy, which is long-lasting retinal damage and vision impairment from sungazing. [52] [53] Frequent exposure to the sun can cause yellow non-cancerous bumps on the middle part of the sclera of the eye, called pingueculae. It ...
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The quantity of hairs depends on hair colour (before graying): [7] [8] an average blond-haired person has 150,000 hairs, a brown-haired person has 110,000, a black-haired person has 100,000, and a redhead has 90,000. [9] Hair growth stops at death; the illusion of growth after death is due to shrinkage of the skin by drying. [10]