Question

What makes Xanthophyll (any) and b-carotene non-polar.

Answer 1

http://chemicalland21.com/lifescience/foco/BETA-CAROTENE.htm

Read the text if you will, but the pictures are worth more. Look carefully if you will at the structures, beta-carotene and xanthophyll are assembled in near perfect symmetry, primarily with carbon chains. The heavy presence of carbon lends toward non-polarity.