The chemicals are present in small amounts , but the long term effects of smearing them on our heads , faces , and bodies every day are unknown .
里面化学成分仅是很少的量，但长期地每天涂抹在我们头上、脸上和身体上的效果却是不可估量的。
A grass-roots alternative has emerged in another tanzanian district , ulanga , where traditional healers " cure " elderly women of witchcraft by shaving their bodies and smearing their pates with " anti-witchcraft paste " .
