Figure 1 The Commission Internationale de l'Eclairage system: Guideline for the measurement of skin color and erythema. Source: Adapted from Ref. 13.
status as well as the intake of drugs or caffeine, measurements should always be performed in a standardized and reproducible setting, following the guidelines thoroughly (13,16). In order to obtain reliable results, the probe should be held to the skin without exerting pressure. Taking the arithmetic means of repeated measurements for analysis is advisable. Baseline L*-values of healthy, unaffected vulvar skin were shown to be significantly lower, indicating a higher absorption of light, whereas a*-values were significantly higher compared to forearm skin, due to higher basal blood flow on the vulva. After induction of experimental irritant contact dermatitis, a* increased significantly in both sites, but less on the vulva, whereas the L*-values remained unchanged on the vulva, but decreased at the forearm (7).
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Rosacea and Eczema are two skin conditions that are fairly commonly found throughout the world. Each of them is characterized by different features, and can be both discomfiting as well as result in undesirable appearance features. In a nutshell, theyre problems that many would want to deal with.