Can i mix different brands of hair color developer and creme color?

It's generally not recommended to mix different brands of hair color developer and cream color, as they may have varying formulations and pH levels, which can lead to unpredictable results. Different brands might also have different developer strengths, affecting the color outcome and hair health. For the best results, it's advisable to use products from the same brand to ensure compatibility. Always perform a patch test before applying to your entire head.