I-Nucleating agent ikhuthaza i-resin ukuba i-crystallize ngokubonelela nge-crystal nucleus kwaye yenza ulwakhiwo lwe-crystal grain lube luhle, ngaloo ndlela iphucula ukuqina kweemveliso, ubushushu obuguquguqukayo bobushushu, uzinzo lobukhulu, ukucaca kunye nokukhazimla.