"Kammen er til pigerne."

Translation: The comb is for the girls.

[ClayRoze]

Still not sure on the different usage of 'til' and 'for' for the english 'for'.

[octavi.ers]

I found an straight (but tough) answer to this: http://sproget.dk/raad-og-regler/artikler-mv/svarbase/SV00001173 ........i can translate the following: "Grammar says the difference is that TIL is an independent adverbial phrase while FOR is an atribute added to a noun." Several examples are given for the same idea in this page.
Checking a grammar book, I also found specifically: TIL_indirect object, FOR_cause,means..."Det er til dig" =it is for you. "Det er for dig"=it is because of you (for your fault)

[castironowl]

One comb for all the girls? What's the Danish word for "head lice"?

[giota_]

Kammen er til folk med hår.

[Loren70519]

One comb + many girls = lice

[IvanArtamo]

I would appreciate if there is another word to learn insead of "kammen". Something people normally speak about

[HastaLaVista83]

Well, people sometimes talk about combs, so why not?
If you are missing certain words, you can look them up in any dictionnary.