WordNet (r) 3.0 (2006):

platinum blond
    n 1: a blond whose hair is a pale silvery (often artificially
         colored) blond [syn: platinum blond, platinum blonde]

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "platinum blond":
   ash blond, ash-blond, bleached blond, bleached-blond, blond,
   blond-haired, blond-headed, brunet, carrottop, flaxen-haired,
   golden-haired, goldilocks, honey blond, honey-blond,
   peroxide blond, peroxide-blond, redhead, strawberry blond, towhead,
   towheaded