RORY: Oh, a girl told me once that if your scalp is hurting from bleach, drink a 7 Up. It’s something to do with the bubbles.
LANE: The Kim household does not have soft drinks.
RORY: Well, what do you got?
LANE: Something called Salad Water imported from Korea. Believe me, it’s nothing like 7 Up.
7 Up, a lemon-lime flavoured soft drink owned by Dr Pepper, and distributed by Pepsi. It was created by Charles Leiper Grigg in St Louis in 1929, two weeks before the Wall Street stock market crash of that year. Originally called Bib-Label Lithiated Lemon-Lime Soda, it contained lithium citrate, a mood stabiliser used to treat manic states and bipolar disorder. It became 7 Up in 1936, and nobody really knows why that name was chosen – some say that it refers to the seven original ingredients, some that it’s a coded reference to lithium, which has an atomic mass around 7.
7 Up won’t do anything to stop your scalp hurting after bleach (and if it’s the bubbles, wouldn’t any soft drink do the same thing?), but I’ve seen it recommended for stomach ache and the common cold, so there seems to be a lot of belief in it as a folk remedy. I suspect Rory is saying anything to distract Lane, and possibly hoping for a placebo effect.
Salad Water, or Water Salad [pictured], is water flavoured with green salad, produced by Coca-Cola in Japan. I’m not sure why the Kims have imported it from Korea when it’s a Japanese product – perhaps the Korean import-export company imports it from Japan, then exports it to the US.