THE QUANTITATIVE DIFFERENTIATION 333 • d m (/)
334 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Figure I pharmacological influences on the skin surface lipids, undertaken in the meantime, will be described in this paper. B. METHODS This method is based on 3 prerequisites, firstly, it should be simple and require only standard laboratory equipment secondly, it should be only minimally stressful for the subjects under investigation and thirdly, the test should be brief enough to allow numerous individual measurements to be carried out. Figure 2 a
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