Visual assessment of skin reactions has long been used to evaluate the safety of chemicals and preparations that contact the skin, and to meet regulatory requirements. This article reviews the history of visual grading scales, and the results of investigations into the reliability of the method. Some examples are provided to illustrate the diverse array of protocols that use visual scoring to evaluate skin irritation. Furthermore, as bioengineering methods are developed that can quantitate certain aspects of skin irritant and sensitization reactions, it is important to consider whether such measures ...
Historical perspective on the use of visual grading scales in evaluating skin irritation and sensitization is a post from: Skincare
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