For generations, many Asian households—especially in Vietnam and other Southeast Asian countries—have relied on traditional herbal remedies to care for their hair. One popular method involves boiling natural leaves and roots in water and using the resulting liquid to wash the hair. According to traditional beliefs, this practice can help reduce hair loss, stimulate new hair growth, and improve overall hair strength and shine. But how much truth is there behind this long-standing remedy?

The herbs commonly used in these preparations often include guava leaves, soapberry (also known as “bồ kết”), lemongrass, ginger, lime leaves, and other medicinal plants. These ingredients are rich in natural compounds such as flavonoids, antioxidants, saponins, and essential oils. When boiled in water, these substances are released into the liquid, creating a natural hair cleanser that is free from synthetic chemicals.

Scientific research supports some of the benefits associated with these herbal ingredients. Guava leaves, for example, contain antioxidants that help protect hair follicles from oxidative stress, a known contributor to hair thinning and breakage. Ginger has been shown to improve blood circulation to the scalp, which may help nourish hair roots and support healthier hair growth. Soapberry contains natural saponins that gently cleanse the scalp without stripping away natural oils, making it especially suitable for people with sensitive skin or dry hair.

Another advantage of herbal hair washes is their ability to maintain scalp health. A clean, balanced scalp environment is essential for hair growth. According to dermatology experts, scalp inflammation, excess oil buildup, and fungal infections are common causes of hair loss. Herbal rinses with antibacterial and antifungal properties may help reduce dandruff, itching, and irritation, thereby creating better conditions for hair to grow naturally.

However, it is important to approach these remedies with realistic expectations. While herbal hair washes can support hair health and reduce hair fall caused by breakage or scalp issues, they are not a miracle cure for genetic hair loss or medical conditions such as alopecia. The American Academy of Dermatology (AAD) emphasizes that hair growth is influenced by multiple factors, including genetics, hormones, nutrition, and overall health.

Consistency also plays a key role. Traditional remedies typically require regular use over weeks or months to show visible results. In addition, individuals should ensure they are not allergic to any of the herbal ingredients used. Performing a patch test before applying the liquid to the scalp is strongly recommended.

In conclusion, boiling herbal leaves and roots to wash the hair is a natural, low-cost practice that may help reduce hair loss and improve hair quality when used correctly and consistently. While it should not replace medical treatment when needed, it can serve as a gentle, supportive approach to maintaining healthy hair and scalp balance in daily hair care routines.