Which of the following techniques is helpful for achieving an even haircut?

Using the point cutting method is effective for achieving an even haircut because it allows for blending and softening lines in the hair, rather than creating blunt edges. This technique involves cutting into the ends of the hair at an angle, which helps create texture and movement while ensuring that the overall length remains uniform.

This method is particularly useful for removing bulk or adding layers without sacrificing length, which contributes to a more seamless and natural look. It can also help to avoid the "pyramid" effect that sometimes occurs with straight-across cutting, making the haircut appear more balanced and professional.

While cutting dry hair can offer some accuracy in seeing how the hair falls, it may not provide the same blending capabilities as point cutting. Always cutting straight across can lead to a lack of dimension and movement, making the hair appear flat. Using a straight razor provides a different effect and is generally used for texturizing, but it may not achieve the same level of evenness as point cutting in a layered haircut.