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What is All of these are true for home bleaching technique, except: and explain in detail?
HOME BLEACHING TECHNIQUE/NIGHT GUARD BLEACHING
Commonly used solution for night guard bleaching 

10% carbamide peroxide with or without carbopol. 
15% carbamide peroxide.
Hydrogen peroxide (1-10%). 

Key concept: 
Bleaching would be done only one arch at a time.