Hair dye can freeze if left in a cold car, especially if the temperature drops below freezing point (32°F or 0°C). When hair dye freezes, the liquid components can separate from the color pigments, which can affect the dye's effectiveness and consistency. Freezing can also damage the chemical composition of the dye, potentially altering the intended hair color outcome or causing uneven results.
To prevent hair dye from freezing, it's recommended to store it in a cool, dry place that doesn't experience freezing temperatures. If you must transport hair dye during cold weather, try to keep it in an insulated container or bring it inside your vehicle (e.g., the glove compartment) to minimize exposure to extreme cold.
