Thin outer layer (6)
I believe the answer is:
veneer
(Other definitions for veneer that I've seen before include "Thin skin on surface" , "Mask; gloss" , "Superficial coating" , "Thin decorative covering of fine wood" , "Thin wood facing" .)
I believe the answer is:
veneer
(Other definitions for veneer that I've seen before include "Thin skin on surface" , "Mask; gloss" , "Superficial coating" , "Thin decorative covering of fine wood" , "Thin wood facing" .)