What should be done if fleas are in the hair? - briefly
Remove the fleas by washing the hair with a medicated shampoo and immediately combing it with a fine-tooth flea comb, discarding any captured insects. Follow with a topical insecticide approved for scalp use and launder all bedding and clothing in hot water to prevent reinfestation.
What should be done if fleas are in the hair? - in detail
If fleas have entered the scalp, begin with a thorough visual inspection to locate live insects and any attached eggs. Use a fine‑tooth flea comb, working from the roots toward the tips, to pull out each specimen. After combing, rinse hair with hot water (at least 40 °C) and apply a regular shampoo to loosen remaining debris.
Apply a medicated shampoo specifically formulated for ectoparasites. Products containing pyrethrins, permethrin, or selamectin are effective; follow the manufacturer’s timing and concentration guidelines precisely. Rinse thoroughly to prevent residue buildup.
Treat the surrounding environment to eliminate the source of reinfestation. Wash all bedding, towels, and clothing in hot water (≥60 °C) and dry on high heat. Vacuum carpets, upholstery, and floor seams, discarding the vacuum bag or cleaning the canister immediately. If pets are present, administer a veterinarian‑approved flea control product and treat their bedding as well.
Monitor the scalp for continued irritation or additional fleas for at least 48 hours. Repeat combing and, if necessary, a second application of medicated shampoo after 24 hours. Seek professional medical advice if severe itching, rash, or secondary infection develops.