South Dakota Cosmetology Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

Gradual lightening with highlights is considered the safest method for lightening hair because it involves selectively lightening only a few strands at a time rather than the entire head. This approach minimizes the risk of damage to the hair. Highlights allow for a more controlled process, enabling the stylist to better manage the level of lightness achieved and how the hair reacts to the lightening agents.

Additionally, highlights can be blended into the natural color of the hair, providing a more natural look and reducing the risk of severe color changes associated with more aggressive methods. This gradual process also gives the hair time to recover between applications, which is crucial for maintaining hair health and integrity.

In contrast, using bleach on the whole head can lead to significant damage and potential for breakage if not done correctly. Box dye may offer a solution, but it often lacks the precision that a professional service provides. Applying lemon juice directly, while popular in DIY methods, is less effective and can lead to dryness or damage when exposed to direct sunlight or left on for extended periods.