I have been comparing phone photos because I want a better starting point for choosing a hair shade. The same face looks warmer by a window in the evening and cooler under a bright bathroom light. Those changes make me cautious about treating a screen label as a final answer. My natural hair is light brown, and I am considering a subtle change rather than a dramatic one. I found skin tone analysis while looking for a way to compare images, but I still need a sensible way to use the information. I want a shade that works in normal daylight rather than one that looks good only on a phone screen. I can take pictures with the same plain background, no beauty filter, and my hair pulled away from my face. Should I keep the lighting and clothing simple when I compare possible shades? I am also thinking of holding a few fabric colors near my face rather than deciding from a single photograph. I could ask the stylist to check physical swatches beside my face and existing hair. That would give us something concrete to discuss instead of trying to prove that an app assigned the right season. Leaving the pictures unfiltered should make the comparison more honest. If your photos gave conflicting undertone clues, how did you decide whether to try neutral or cool hair color?