According to astrology, the best days to cut hair can vary depending on different factors such as astrological signs, lunar phases, and planetary influences. Here are some insights from the search results:

1. Best Days Based on Astrological Signs [1]:

   • Monday: Considered a good day for all astrology signs.
   • Tuesday: Inauspicious for nail cutting, believed to reduce life expectancy.
   • Wednesday: Known as Buddha's day, cutting hair and nails brings good luck.
   • Thursday: Cutting hair and nails on this day is believed to bring negative effects.
   • Friday: A day dedicated to unconditional love, cutting hair and nails brings good fortune.
   • Saturday: Cutting hair and nails on this day is believed to distract from optimism and goals.
   • Sunday: Considered an inauspicious day for cutting hair or nails.

2. Best Time Based on Lunar Phases [2]:

   • Waxing Moon: If you want your hair to grow faster and have strong roots, cut and feed it during this phase.
   • Waning Moon: If you want to slow hair growth and strengthen roots, cut it during this phase.
   • Avoid cutting hair during the new Moon and specific lunar days (9th, 15th, 23rd, and 23rd) as they are considered critical periods.

3. Best Time Based on Zodiac Signs [2]:

   • Each zodiac sign has different effects on hair growth and health:
     • Aries: Hastens hair growth but decreases immunity.
     • Taurus, Capricorn, and Virgo: Favorable for hair growth with less splitting and falling-out.
     • Gemini: Makes hair rebel, but can be useful for curling.
     • Cancer and Pisces: Slows hair growth, suitable for brittle and dry hair.
     • Leo: Favorable for hair dyeing and decoration, makes hair beautiful and voluminous.
     • Sagittarius: Hairdo doesn't hold the form, but can be suitable for those who want hair and career growth.
     • Scorpio: Does not influence hair health, can make hair harder and thicker.
     • Aquarius: Good for experimenting with hairdo, but avoid cutting if possible.

Learn more:

1. Best Days to Cut Hair According to Astrology | Monkvyasa
2. Haircut lunar calendar - best time by the Moon
3. The Best Days for a Good Haircut. Make the most out of your beauty… | by Rachael Middleton | iheartastrology | Medium