Question:
Does Lag B'omer allow someone in shloshim to shave? ie break the shloshim?
Answer:
Lag Baomer is the culmination or breaking of the aveilus for the talmidim of R’ Akiva, and although it is a happy day, it doesn’t break aveilus for relatives. It is similar to a person that loaleiu in shloshim for two relatives that died within one month; when the shloshim of one is over it doesn’t permit the shloshim of the other. Actual breaking of a shloshim is only by a real yom tov, such as succos etc.