Final answer:
Powder bleach with a higher volume developer lightens hair faster, but also poses a greater risk for hair damage if used improperly.
Step-by-step explanation:
In the context of hair lightening, the product that lightens the hair faster is B) Powder bleach with a higher volume developer. Developers come in various volumes, typically ranging from 10 to 40. The higher the volume of the developer, the greater the amount of peroxide it contains, which increases its lightening power. However, it's also important to note that while a higher volume developer will lighten hair more quickly, it can also cause more damage to the hair if not used properly. Care should be taken when using these products to avoid over-processing, which can lead to brittle, damaged hair or even hair loss.