Sensitive skin syndrome is a frequent self-diagnosed entity that has not been previously
described in a Latin-american population. One hypothesis to its development is an alteration
of the barrier function of the skin. The aim of the study is to describe the frequency of
sensitive skin in a mexican population detected through the lactic acid test, and to explore
its response through biophysical measures (colorimetry, transepidermal water loss (TEWL) and
capacitance). The prevalence of this syndrome in studied populations is approximately 50%.
Considering racial skin differences, the investigators would expect at least a 20%
For this purpose, the investigators would need a minimum of 243 healthy volunteers, 18 years
or older, with previous informed consent, to whom the lactic acid test will be performed. The
investigators will record any unpleasant sensation graded in a Visual Analog Scale (VAS) of
10 points, colorimetry, TEWL and capacitance before the test and at 3, 5, 8 and 10 minutes
after the lactic acid test.