Greasy scalp and hair loss are common issues many people face during the humid season, which typically runs from february to april each year in the northern region. This transitional weather, characterized by cold fronts, drizzle, and fog, fosters bacterial growth. This leads to clogged hair follicles, dandruff, inflammation, and an itchy scalp. Fluctuating temperatures and humidity weaken hair follicles and damage hair germ cells, making hair prone to breakage, damage, and loss, hindering its growth.

Doctor Hoang Quyet Tien, from the Medical Information Center at Tam Anh General Hospital TP HCM, states that hair also sheds according to its physiological cycle, in addition to weather factors. The peak times for hair strands to enter the resting and shedding (telogen) phase are around july and april. The combination of seasonal changes and this physiological cycle often results in more hair loss than at other times of the year, lasting for about one to three months.

Under normal conditions, after hair sheds, the hair germ cells within the follicle continue to differentiate to form new hair strands, replacing those that have been lost. However, if the scalp is inflamed or hair care is improper, causing hair follicle atrophy, this process can be disrupted, leading to severe hair loss and difficulty in recovery.

Hair structure. Photo: Eco Pharmaceutical Joint Stock Company

Certain habits during humid weather can exacerbate hair loss, such as over-brushing vigorously or tying wet hair. When hair becomes greasy due to humidity, frequent shampooing, even two to three times a day, strips hair of its natural moisture. Using strong cleansing or stripping shampoos and conditioners can damage the scalp. While these factors do not directly cause hair loss, they can weaken the activity of hair germ cells—the key determinant in hair formation and growth—leading to slow, weak, thin, and rapidly shedding hair.

To reduce greasy hair and hair loss during the humid season, proper hair and scalp care tailored to the current condition is essential. Shampoo at a moderate frequency, prioritizing gentle, mild products with natural and herbal ingredients, and avoid excessive conditioner to reduce greasiness.

After washing, gently pat hair dry with a soft towel, avoiding vigorous rubbing that can cause frizz. When blow-drying, divide hair into small sections and dry from the roots to the ends for even drying. Using a cool setting helps minimize hair dampness and reduces tangles. However, hair should only be 80% dry to make it easy to style while remaining soft and smooth.

Doctor Tien notes that nutrition also plays a crucial role in maintaining the hair growth cycle. Ensure a daily diet rich in various nutrients essential for hair, such as: protein (keratin), biotin, iron, zinc, omega-3, vitamins A, C, E, and B-complex vitamins, sourced from eggs, salmon, dark leafy greens, and nuts. Specialized hair nutrients can be supplemented, including cynatine extract, pumpkin seed, horsetail, black cohosh, and hibiscus flower, which promote hair germ cell development, effectively reduce hair loss, extend hair growth time, and contribute to strong, thick, and smooth hair.

Thai Thanh