This treatment sounds sort of woo-woo, but it actually does work. 这种治疗方法听起来有点假，但实际上确实有效。 More examples

I’m not gonna give you some pep talk or a “woo-woo” solution to your problem.

It's interesting that so many people today are abandoning "traditional" religions, but replace them with some woo-woo, new age mumbo jumbo.

"I became a believer when I could see the results," she said. "It wasn't just woo-woo stuff."

She acknowledges this might sound "woo-woo" but said it's grounded in science, and she certainly does not oppose conventional medicine.

If that sounds a little woo-woo, consider this: In a Harvard University study, hypnotized subjects were led to believe they were experiencing pain, and researchers discovered that the same areas of the brain reacted as if the pain were real.

woo-woo

noun [ U ] informal uk/ˈwuː.wuː/ us/ˈwuː.wuː/

（不科学的）想象出来的办法；空穴来风的想法

ideas or methods that are based on false beliefs or imaginary things, rather than reason or scientific knowledge