Question:
Is it permissible to have a pedicure or a manicure for that matter on Wednesday or is there an issue of nails growing on Shabbos?
Answer:
There is a preference if possible that we should not cut our nails, (or have them cut) on Thursday, which is 48 hrs. before shabbos because the nails will start to look noticeable that they are growing back on shabbos and it is considered a lack of respect for the shabbos. The beginning of Thursday starts on Wednesday night, therefore it is permitted to have a manicure, on Wednesday, but not Wednesday night.
Sources:
M:B 260-12
