Men's commercials sold soaps strong enough to be used as tortures.

"I've got some strong soap in my bag", she said.

I also want strong soap, the strongest we have.

But there wasn't much else she could do without some strong soap and a broom.

At least, do scrub well with a strong soap when back indoors just to be sure, particularly on any exposed skin areas.

You may have to treat the area with a scrubbing of strong soap.

She had fine wide hips and smelled not unpleasantly of strong soap.

Will had been in the kitchen, scrubbing his hands with strong yellow soap.

In addition, it is important to avoid strong soaps or chemicals, especially those known to cause a skin reaction.