Reply To: A practical way to compare cooler hair shades

I have been comparing my undertone in photos but my results change more than I expected. In indirect morning light my skin seems neutral to cool while warm indoor bulbs make it look noticeably golden. Automatic processing seems to shift the image even when I keep the same position and background. I tested with no makeup and a neutral top so clothing should not be adding much reflected color. I am comparing the photos with a simple [url=https://hairdye.top]skin undertone test camera[/url] rather than trusting one image. Would it be better to lock exposure and white balance before taking a short series of photos? I could place a white sheet and a gray reference beside my face if that makes the comparison more useful. If you have repeated this kind of test, which lighting conditions were consistent, and which clues did you ignore? I am mainly looking for a method that produces the same answer twice before I start choosing hair or clothing colors from the result.