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Introduction to Conditioning Agents for Hair and Skin
Published in Randy Schueller, Perry Romanowski, Conditioning Agents for Hair and Skin, 2020
Randy Schueller, Perry Romanowski
Skin. While shine or gloss per se may not necessarily be a desirable goal for skin conditioners, it may be an advantage for a facial moisturizer to leave the skin with a "healthy glow." We note that "healthy" appearance claims make more sense when directed to skin, since that is a living organ. Another visual indicator of the quality of skin condition is its color. Color is an important indicator because dry skin can take on a whitish or grayish cast as light is scattered by the loose scales of the stratum corneum; in blacks this gives skin an "ashy" appearance (2). Severely dry skin may have a reddened or cracked appearance, which serves as a visual cue to its poor condition.
Methods for Evaluating the Efficacy of Cosmetics Containing Glycerine
Published in Eric Jungermann, Norman O.V. Sonntag, Glycerine, 2018
The application of an occlusive material to the skin surface will physically block the surface (at least partially) and lower TEWL for a time. This reduction in TEWL is traditionally taken as a direct measure of the moisturizing efficacy of the material. Occlusive moisturization is one of the best ways to treat dry skin (1), as it increases the water content from within and keeps it there. However, it should be realized that after several hours, increased hydration may actually cause TEWL to rise above the baseline value, because the diffusion coefficient of the skin increases with hydration (69).
An evaluation of occupant health and indoor environmental quality in university workspaces
Published in Human and Ecological Risk Assessment: An International Journal, 2023
Health symptoms consisted of 22 questions categorized into four different groups of symptoms (mucosal, dermal, psychological, and general symptoms). Mucosal symptoms included eye irritation, dryness and itching, blurred vision, runny and stuffy nose, nose irritation and itching, cough and sore throat, throat irritation, and asthma. Dermal symptoms included itching in the skin or the face and dry skin. Psychological symptoms included difficulty in concentration, tension or stress, depression, and aggression. At last, general symptoms included heart palpitations and pain, blood pressure, headache, nausea, dizziness, pain in shoulder, neck or back muscles, fatigue, or lethargy, feeling drowsy and insomnia, and sleep disorder.