In 2006 the US firm Nielsen polled 25,408 Internet users in 46 countries about their willingness to pay for various therapies to maintain their appearance, as well as the frequency with which they avail themselves of them.
2006 年，美國尼爾森民調公司曾訪問全球 46 個地區、2 萬 5,408 名網友，詢問他們會投資何種療程及使用頻率以維持外表活力。