The belief about which days one should not cut hair—such as on Buddhist holy days or Wednesdays—has been talked about throughout history. Many people worry that cutting hair on an unlucky day or a day not favorable to their horoscope will bring bad luck or illness to themselves or family members, causing great distress. But perhaps these are just traditional superstitions passed down over time.
Thairath Online inquired with Mor Krit Confirm an expert in ancient texts, who said
The belief about not cutting hair on Wednesdays
This belief continues from the past to the present. Although some barbershops open on Wednesdays, they often wonder if customers will come because many still hold to the saying that cutting hair on Wednesday brings bad luck—"a chopped head will rot"—believing it leads to misfortune, hardship, illness, and suffering. Some shops even choose to close on Wednesdays regularly.
No ancient text prohibits cutting hair on Buddhist holy days. Historically, during the feudal era, it was said that cutting hair on Wednesday was reserved for the nobility, and barbers were only available then to serve them. Common people were advised to cut hair on other days. In conclusion, no text forbids cutting hair on Buddhist holy days, so it is permissible.
People born on Saturday should avoid cutting hair on Fridays because it may cause chaos and instability in life. However, cutting hair on Wednesday is good for them, bringing luck in work and finances.
Believed to bring longevity, good health, and freedom from illness.
Believed to bring luck and wealth—worth trying.
Believed to bring power and respect from others.
Believed to be unlucky, causing illness, loss of fortune, and suffering. Many barbershops close on this day.
Believed to invite protection from deities and sacred spirits.
Believed to increase charm and attract love from others.
Believed to be favorable—plans succeed, and one gains wealth and good fortune.
People born on Sunday: should cut hair on Thursday and avoid Tuesday.
People born on Monday: should cut hair on Wednesday (according to birth day haircut texts) and avoid Thursday.
People born on Tuesday: should cut hair on Friday and avoid Sunday.
People born on Wednesday: should cut hair on Monday and avoid Wednesday.
People born on Thursday: should cut hair on Sunday and avoid Monday.
People born on Friday: should cut hair on Tuesday and avoid Saturday.
People born on Saturday: should cut hair on Wednesday and avoid Friday.
However, these beliefs are personal superstitions rather than strict rules. Notably, there is no prohibition against cutting hair on Buddhist holy days, and cutting hair on Wednesdays is allowed. Nowadays, many barbershops even remain open on Wednesdays, which almost completely dispels the old belief that one should not cut hair on that day.