Tampering with Signs of Tzaraat

"Take heed in the plague of tzaraat"Deuteronomy 24:8.

It is forbidden to cut or burn off signs of tzaraat [e.g., white hairs] in order to change their appearance [so that the person does not appear impure].

Shaving Hair-Area Tzaraat

"But the patch shall not be shaved"Leviticus 13:33.

It is forbidden to shave the hair [in the area immediately surrounding] a hair-area tzaraat affliction.