Hi all! Have had head lice for three years on and off...crazy, upsetting, and difficult! I have found an answer.I used sunscreen 30 for three hours. I noticed it was greasy and unwelcoming. To let you all know...I have tried all remedies! Okay...so, dry hair and apply 30 sunscreen on the root lines first...apply a lot! Rub in and cover all hair like a helmet. Place shower cap on for three hours. Go to shower tap, bend over and apply a hardy conditioner for hair...rub in and add more...you will feel a waxy effect taking place....wet hair with warm water and comb with small-toothed comb. It will be like taking a wet wax off hair...keep combing. Rinse hair in warm water...not hot! Now you have a seal. Wrap hair for 10 min. in towel. Release hair and blow dry on high. Stop and take a break...on head and upside down...pay attention to crown and back and 2 inches above ears...do again...stop and take a break...the hair will separate in small ribbons....dry more if you can/ Now sit and breath and have a drink...do not wrap hair again...put towel on pillow for sleep. In morning, blow again until hot...and wash hair as usual. Blow dry after or sun dry shaking hair and fingering. I hope this helps friends. Sunscreen 30 and later a hardy conditioner on top.... waxy buildup...comb. Blow hair...break for a bit...and resume/ Please no tears.... this will work!!!!