A Yonsei University research team has uncovered that the quality and length of a woman's hair may play a significant role in the sexual dynamics of a marriage.

The survey conducted on 204 couples in Korea suggests that women with long and high-quality hair experience more frequent sexual intercourse with their spouses.

The survey took into consideration the hair condition, hair length, attractiveness, libido, frequency of sexual intercourse, partner commitment, relationship satisfaction, and sexual satisfaction.

This intriguing research delves deep into the age-old adage that suggests "a woman's hair is her crowning glory," exploring how it impacts perceptions of attractiveness and subsequent sexual desire within the confines of marriage.

Drawing from a rich tapestry of historical and cultural references that celebrate women's hair, from the biblical story of Samson and Delilah to Rapunzel's enchanting tresses, the team, led by Professor Kim Young-hoon of the Department of Psychology, offers a modern-day analysis of hair's psychological significance.

"There has been no research until now that investigates the relationship between a woman's hair and sexual frequency or desire, so the potential impact of women's hair on their sex life has been largely unknown," the journal stated, pointing out the novelty of the study. "Hair quality, perceived as a more innate trait than length, may serve as a reliable indicator of a woman's reproductive potential."

This quality of hair, therefore, might be influencing men's subconscious mating instincts, leading to an increased desire for sexual intimacy, the research outlined.

However, unlike their female counterparts, men's hair—regardless of its length or quality—showed no significant association with sexual frequency in the study.

"This asymmetry underscores the gendered perceptions of hair's role in sexual attraction and desire," the study outlined.

The study also ventures into the realm of sexual selection theory, proposing that the allure of high-quality hair in women is linked to an evolutionary signaling system that indicates health, youth, and fertility. These signals, in turn, affect the sexual dynamics within a marriage, fostering a stronger sexual connection between partners.

The research suggested that investing in hair care might be beneficial for women who wish to improve their sexual lives.

Still, the study cautioned readers against oversimplifying the results of the study, pointing out that while hair quality and length may influence sexual frequency to some extent, myriad factors contribute to the complexity of marital intimacy.

The team emphasized the importance of understanding this research within a broader context that includes emotional connection, communication, and mutual respect.

The results of the research were published in Evolutionary Psychology.