Quick Answer: How to Tell If Fabric Is Silk or Polyester

How can you tell if a fabric is polyester or silk?

Genuine silk changes color when you tilt it, refracting the light as it passes through the prisms in the fiber. Move the cloth in front of a light source. If the shimmering is just a consistent white shine, it’s polyester. If the reflected light changes color, it’s probably silk.

How can you tell silk fabric?

Simply touch your silk and get a good feel for the smoothness of it. Real silk is completely smooth to the touch, with a soft and almost waxy feeling. Further to that, if you scrunch it up a bit in your hand, you should hear a crunching noise – that sound should tell you that it’s the real deal.