What color cancelation occurs when red is applied to green?

When red is applied to green, it results in the neutralization of the green tone. This is based on the principles of color theory, where complementary colors directly oppose each other on the color wheel. Green, being the complementary color to red, means that when red is introduced, it effectively cancels out the green hues. This is widely utilized in various beauty and hair color applications to achieve a desired balance or to correct unwanted tones. In artistic practices, including cosmetology, understanding how colors interact allows for precise control over color outcomes, making the neutralization of undesired tones a critical skill.

The other options, such as enhancement of tones or brightening effects, do not accurately describe the interaction between red and green, as they imply an increase in vibrancy or brightness rather than correction or cancellation, which is the primary action taking place in this scenario.