(Act 3 Sc 4 l.44)
1/
LENNOX: Here is a place reserved, sir.
M: Where?
LENNOX: Here, my good lord. What is't that moves your highness?
M: Which of you have done this?
LORDS: What, my good lord?
M: Thou canst not say I did it: never shake
Thy gory locks at me.
2/
It's the moment Macbeth realises he can never be free of his bloodshed.
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Banquo's "gory locks" are gory because of the "twenty trenched gashes on his head" that the First Murderer describes.
Is also echoes Macbeth's first reaction to the witches' prophesy: "that suggestion / Whose horrid image doth unfix my hair"
6/
In the witches' final prophecy, Banquo's golden hair tortures Macbeth by being the sign of his continuing bloodline:
7/
And "hair" is one of the images Macbeth returns to in 5:5 -- "My fell of hair / would at a dismal treatise rouse and stir."
This concludes my discussion of HAIR in Macbeth.
8/
In a play with so many mentions of BLOOD, GORE, is only used twice, for the blood of Macbeth's victims.
9/9