Conditioner is the same as we in Danish call conditioner. It is a hair product that helps to care for the hair from the inside out. It makes the hair softer, gives more shine and fullness. You can get many different conditioners. One can get some for colored hair which takes into account what it needs. You can also get some if you want more fullness, and some for very damaged hair. Conditioner makes the hair easier to straighten out, and in this way you avoid having to stand with the brush for a long time to save knots of hair out. Conditioner is good for long hair, but is of course sensible to use for all hair, especially if you want your hair to look healthy. There are several different conditioner brands, but one of the really big ones is Schwarzkopf.