Haircut by the Moon 2026: best days
A widespread tradition claims the Moon's phase influences how hair grows after a cut. Here's the 2026 calendar with the best days depending on what you want: faster growth or strengthening.
ℹ️ Note: there is no scientific evidence that the Moon affects hair growth. It's a popular belief that many people follow out of habit; we present it as a traditional guide.
✦ Does the Moon influence hair?
The idea comes from lunar agriculture: just as plant sap is believed to rise in the waxing phase, tradition applies the same logic to hair. In the waxing phase (new to full moon) hair is said to grow faster; in the waning phase (full to new moon), slower but stronger. Again: it's folklore, not science, but a deeply rooted custom.
✦ Grow faster vs. strengthen
🌒 For faster growth → cut during the waxing phase (between new moon and full moon).
🌘 To strengthen and grow slower → cut during the waning phase (between full moon and new moon). Ideal if you want to keep the length or add body.
✦ 2026 haircut calendar month by month
| Month | To grow (waxing) | To strengthen (waning) |
|---|---|---|
| January | 18 – 31 | 3 – 17 |
| February | 17 – 28 | 1 – 16 |
| March | 19 – 31 | 3 – 18 |
| April | 17 – 30 | 2 – 16 |
| May | 16 – 30 | 1 – 15 & 31 |
| June | 15 – 28 | 1 – 14 & 29 – 30 |
| July | 14 – 28 | 1 – 13 & 29 – 31 |
| August | 12 – 27 | 1 – 11 & 28 – 31 |
| September | 11 – 25 | 1 – 10 & 26 – 30 |
| October | 10 – 25 | 1 – 9 & 26 – 31 |
| November | 9 – 23 | 1 – 8 & 24 – 30 |
| December | 9 – 23 | 1 – 8 & 24 – 31 |
Ranges based on the 2026 moon phases. Check the exact day with the moon phase tool.
✦ Frequently asked questions
When should you cut your hair for faster growth?
According to tradition, during the waxing phase (new moon to full moon).
When should you cut your hair to strengthen it?
During the waning phase (full moon to new moon).
Is it scientifically supported?
No. It's a traditional belief; there's no evidence the Moon influences hair.