Head lice experts have shared a rather unsavory video of a particularly bad case - an infestation that had been left for five years in a young girl's hair.
The video, shared by The Lice Angels, shows a member of the team treating the girl's hair in order to rid her of her years-long head lice.
The person treating the girl's hair can be heard saying in the video: "These eggs are really impacted. I already applied the treatment. So now I'm going to get a comb. I'm going to add a little bit more to her hair.
"But I want you guys to see how easy it's going to come out of her hair. Put a little bit more in her hair. The eggs are very impacted in her hair so I want you guys to see how good it's going to come out."
Check out this extreme head lice infestation:After combing the girl's hair, the expert then reveals the lice that has come out with the comb - it's an astonishing amount.
"It comes out very easy," she reiterates.
Needless to say, people were impressed by the near-miraculous treatment, but also shocked as to how it could be left to fester for so long in the first place.
One wrote: "you guys are doing GODs work Sis!! you are so sweet to her as well!"
Another said: "Makes my hair itch watching this. This horrible and must have felt horrible."
A third commented: "This is awful. So sad and should never happen."
Another agreed: "Poor thing, that must be so uncomfortable."
On their website, The Lice Angels say they have "successfully treated hundreds of thousands of people worldwide!"
They continue: "Our treatment and line of preventatives are safe for all ages and hair types. All of our products are chemical free and all natural.
"Not only does it kill and prevent super lice, but it also is infused with vitamins so you won’t have to worry about our products damaging your hair or scalp. Let us help you put an end to your struggle with lice."