Polyoxyethylene laurylether, an addition polymer of lauryl alcohol and ethy
lene oxide, is used as an emulsifier in cosmetics. We report a case of foll
icular contact dermatitis after the use of polyoxyethylene laurylether that
was contained in a cosmetic. A patch test with polyoxyethylene laurylether
1% petrolatum showed a follicular papular reaction. A use test for polyoxy
ethylene laurylether 1% petrolatum also produced follicular papules at 7 da
ys.