I have terrible eczema and the only thing that helps is rubbing a certain cream on my skin. Am I allowed to do this on Shabbos?
You may apply the moisturizer normally if it is not very thick (i.e. if it is truly a liquid or an oil).
If it is thick, (more like a cream) it should be applied with a shinui (שינוי) [for instance, you can smear it with a gauze or cloth, instead of with your hands].
Sources:
ראה שו”ע אדה”ז סימן תקי”א סעיף א’, סימן שכ”ח סעיפים י”ט וכ”ב, ועוד.
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