Cryptic Test

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Across
  1. 1. Hydrogen in front of limb, that could hurt
  2. 3. Sounds like a sticky substance with central cameo could be dark
  3. 4. Hollow band covers fashionable wrap
  4. 5. American runner is also fitness instructor
  5. 6. Arbitrator with international organisation precedes first diplomat to get money back
Down
  1. 2. Sleep cycle with messy dye provides solution
  2. 4. Enclose bleeding head making a lot of noise