Stop plucking, waxing, threading, and shaving the eyebrows
Apply a brow growth serum with peptides or prostaglandin analogs if already approved for your use
Massage a small amount of castor oil or petroleum jelly into the brow area at night
Keep the eyebrow area clean and avoid harsh exfoliants or retinoids on the brows
Eat enough protein, iron, zinc, biotin, and omega-3s
Stay hydrated and sleep well
Use a tinted brow gel or eyebrow pencil to fill sparse areas temporarily
Avoid touching, rubbing, or picking at the eyebrows
Trim only stray hairs outside the brow shape, not the sparse areas
See a dermatologist if hair loss is sudden, patchy, itchy, or persistent