The technique using a free-form of painting hair lightener directly on clean, styled hair is called Balliage. Balliage is a highlighting technique that doesn't use foils. Instead, one's hair colorist will hand-paint color directly onto one's hair, creating more natural, blended, sun-kissed color.
A free-form of painting hair refers to as free-form technique; painting a lightener (usually a powdered off-the-scalp lightener) directly onto clean, styled hair.
Therefore, the correct answer is as given above
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