Hair light, a subtle colour variation, is a noun that refers to lighter strands in hair that frame the face and create dimension. In nature, sunlight naturally lightens hair strands, as seen with surfer hair or sun-kissed highlights.
Hair light serves an aesthetic purpose, enhancing facial features and making hair appear voluminous and healthier. It's a popular hair colouring technique that has been used for centuries, with the ancient Egyptians employing henna as a natural hair lightener.