f you're using your preferred brand of hair color, such as Goldwell, L'Oréal (ammonia-free), or Schwarzkopf, and just need a repeat order, here’s how you can go about it:

1. Goldwell:

• Identify the exact shade you’ve used before (e.g., Colorance, Elumen, or Nectaya).

• If you're reapplying to the same color, you can simply order the same shade.

• Check developer volume: Typically, Goldwell products require specific developers for different results (e.g., 20 volume for regular color or 30 volume for lifting).

2. L'Oréal (Ammonia-Free):

• L'Oréal INOA or L'Oréal Excellence Crème is ammonia-free.

• Look up the specific color code you used (e.g., 6.3 for dark blonde or 7.1 for ash blonde).

• Developer options: If it’s INOA, use their specific INOA developer (usually 20 volume). Excellence Crème might need a 20 or 30 volume developer, depending on how much lift you need.

3. Schwarzkopf:

• Schwarzkopf has several ammonia-free lines such as Igora Vibrance or Schwarzkopf Color Expert.

• Determine the exact shade, which should be a number-letter combination (e.g., 6-0 for dark blonde or 8-1 for ash blonde).

• Developer: usually 20 volume for regular color or 30 volume for lifting is needed.

If you'd like help finding a link to reorder your specific color or need assistance in identifying the right shade for your hair type, feel free to let me know!