Batiste

[Sarah]

Originally, cambric or lawn of fine linen; now applied also tocloth of similar texture made of cotton.

[Sarah]

Something supposed to improve the situation, which in fact just make matters worse.

After famous Schwarzkopf brand of spray-on dry shampoo, which makes ones hair far more greasy and unkempt than it ever was before. Often considered a good idea for backpackers, who can't wash their hair properly, its actual use never fails to come as a nasty surprise.