The influence of lunar cycles on hair growth and health has been studied and observed for centuries across different cultures. As we approach September, this age-old practice continues to gain traction worldwide, particularly among those seeking to restore their hair's vitality after exposure to summer sun and salt water.
What many might dismiss as mere folklore has deep roots in various civilisations. While Chinese culture has long incorporated lunar cycles into their timekeeping, Western observations have noted lunar influences on tides, agricultural cycles, and animal behaviour. This ancestral knowledge has now extended into beauty and personal care practices.
According to hair care specialist Conchi Arias from Granada's prestigious Campos Curlhair salon, the ideal time for a haircut varies significantly depending on the moon phase. "Cutting hair during the waning moon results in slower growth, while cuts during the waxing moon promote faster growth," Thompson explains, basing her recommendations on biodynamic principles traditionally used in agriculture.
Scientific basis and modern applications
The biodynamic calendar, used by farmers worldwide for decades, determines optimal times for agricultural activities based on cosmic cycles. Recent studies have explored potential connections between lunar cycles and human biological rhythms, though the scientific community remains divided on the extent of these influences.
Spanish salon statistics indicate that approximately 23% of professional hairdressers now consider the lunar calendar when scheduling appointments. This trend has shown a steady 5% annual increase since 2023, reflecting growing interest in natural hair care methods.
September 2025's lunar events
A Total Lunar Eclipse on September 7th, visible across Europe, will coincide with the Harvest Full Moon. This astronomical event will be followed by a Partial Solar Eclipse on 21st September, visible from the South Pacific.
Recommended dates for September 2025
- For hair strengthening: 21st, 24th, and 25th September (New Moon and early Waxing Moon)
- For rapid growth: 8th and 9th September (post-Full Moon)
- For longer-lasting hair removal: 15th, 16th, 17th, 25th and 26th September (Waning Moon and New Moon)
Maximising benefits
Morning appointments (7am-10am) are recommended for strengthening treatments, while afternoon slots (4pm-7pm) are preferred for growth-stimulating cuts. Experts suggest increasing silicon-rich food intake before appointments and using natural hair care products during significant lunar phases.