功效 gōngxiào efficacy
How to remember 功效: 功 achievement + 效 result = efficacy.
Characters
How it is used
- The efficacy/beneficial effect of something, especially medicine, cosmetics, or measures - 这种药功效显著 (zhè zhǒng yào gōngxiào xiǎnzhù) this medicine has marked efficacy.
- Stresses a positive, intended result, unlike neutral 效果 (xiàoguǒ, effect/result) which can be good or bad.
- Common in health, skincare, and product advertising.