Hair Colour Preview

Use the photo I attached. Keep my face, skin tone, features, expression, clothing and background exactly as they are. Change only my hair colour to [hair colour], keeping the same length, cut, parting and texture, with natural variation between the roots, the mid lengths and the ends. Match the new colour to the light in the photo, including the highlights where the light hits and the reflected tone on the forehead and shoulders. Keep flyaway strands and the hairline natural. No skin retouching, no text, no watermark.