Is there a time limit? I'd like to see Samuel and could ask him about David's hair.
I Samuel 16 . KJV
12a And he sent, and brought him in.
12b Now he was ruddy, and withal of a beautiful countenance, and goodly to look to.
12c And the LORD said, Arise, anoint him: for this is he.
13a Then Samuel took the horn of oil, and anointed him in the midst of his brethren:
13b and the Spirit of the LORD came upon David from that day forward.
I think this would be a strong witness for the doubters, especially at such a special time of year.