Final answer:
The best parting to use when performing a lightener is a weave parting, which involves taking small sections of hair and leaving gaps in between. This technique helps prevent uneven or patchy lightening and creates dimension in the hair.
Step-by-step explanation:
When performing a lightener, the best parting to use is a weave parting. This technique involves taking small sections of hair and leaving gaps in between, allowing the lightener to be applied evenly and avoid overlapping. Weave parting helps prevent uneven or patchy lightening and ensures a natural-looking result. Another benefit of weave parting is that it creates dimension and movement in the hair, as the different sections are lightened to varying degrees.