skin deep

/skɪn dip/
adjective
  1. Only on the surface; not deep or lasting, especially in reference to beauty, feelings, or qualities.
    • Her kindness was only skin-deep, and she soon showed her true selfish nature.
    • Their friendship turned out to be skin-deep and ended when they moved apart.
    • Beauty is only skin-deep, but a good personality lasts forever.
Antonyms
What does "skin deep" mean? | whatsthatwordmean | whatsthatwordmean