How long does it take for hair to grow back after hair loss?
Disease description:
Hair loss has become quite severe; it feels like my hair volume has significantly decreased, and the hair that falls out isn't growing back. How long does it take for hair to regrow after falling out?
Doctor's answer (1)
Dr. Wang Xiaoyan
The time it takes for hair to regrow after hair loss varies from person to person, but generally, in healthy individuals, it takes approximately 3 to 5 months for hair to begin regrowing after shedding. This process is governed by the hair growth cycle, which includes the anagen (growth) phase, catagen (transition) phase, and telogen (resting) phase. The anagen phase typically lasts 2 to 6 years, while the telogen phase usually lasts about 2 to 3 months—the period during which hair shedding primarily occurs. However, this timeframe is not absolute, as hair regrowth speed is influenced by various factors such as individual constitution, metabolic rate, scalp health, and lifestyle habits. For example, younger individuals with faster metabolism may start seeing new hair growth within 1 to 2 months after improving unhealthy habits. In contrast, older adults or those experiencing hair loss due to medical conditions may require a longer recovery period. Overall, maintaining good scalp hygiene, balanced nutrition, and healthy lifestyle practices can support optimal hair growth. If hair loss persists or worsens, it is advisable to seek medical advice and professional treatment promptly.
