Sefer Ha’mitzvos Ha’Katzar (The concise book of mitzvos) By the Chofetz Chaim
This book lists the Torah mitzvos that can be observed today
Second Section – the Negative Commandments
164. It is a negative commandment “do not make one’s self bald over death of a relative”
As it states in Devarim (Deuteronomy) 14:1, “do not make baldness between your eyes for a dead person.” This means do not pluck out the hair in one’s head.
This applies in all places and at all times, for men and for women.
4. Be kind to yourself. Speaking badly even about yourself is unethical.
הלכות שמירת הלשון 