Severe hair fall after rapid weight loss is quite common because a sudden reduction in body weight can stress the body and disturb the normal hair growth cycle. Nutritional deficiencies, low protein intake, iron deficiency, vitamin imbalance, hormonal changes, emotional stress, or crash dieting may all contribute to heavy shedding several weeks or months after weight loss. Losing around 25 kg in a short period can trigger this type of temporary hair fall in many people. Kera XL serum may help support scalp health and hair growth in some individuals, especially when combined with proper nutrition and correction of underlying deficiencies. However, hair recovery is usually gradual and may take several months because hair follicles need time to return to the normal growth phase. Adequate protein, iron, zinc, vitamin D, sleep, and stress management are often important parts of recovery, along with topical treatment. If hair thinning becomes patchy, scalp itching develops, periods become irregular, or shedding continues aggressively, further evaluation for thyroid problems, anaemia, or hormonal imbalance may be useful.