Nostrums that promise to smooth wrinkled skin are a staple of snake-oil salesmen everywhere, but now there is strong evidence that certain kinds of treatment are effective. Over the past decade, researchers have been learning which treatments work, and why.

nos・trum

n

A remedy not substantiated by scientific evidence or broadly accepted by the scientific community. Some herbal supplements may fall under this category.

━━ n. いんちき薬; 秘薬; 売薬; （問題解決の）特効薬.