Two major shampoo makers are expected to wage a massive marketing war in the fall, with a domestic giant preparing to battle a foreign competitor for the top spot it lost two years ago.

Asience brand shampoo and conditioner, scheduled to hit the market next month, is Kao Corp.'s answer to Lux Super Rich, a product made by Nippon Lever K.K.

The latter is the Japanese unit of the Unilever Group, an Anglo-Dutch consumer products giant.