The amount of time you should leave developer in your hair depends on the specific product and the desired level of lift.
General Guidelines:
- Lightening: For a subtle lift, leave developer in for 20-30 minutes.
- Medium Lightening: For a noticeable lift, leave developer in for 40-50 minutes.
- Maximum Lightening: For the most dramatic lift, leave developer in for 60 minutes.
Important Considerations:
- Developer Strength: Higher volume developer (e.g., 30 or 40 volume) works faster than lower volume developer (e.g., 10 or 20 volume).
- Hair Type: Fine or porous hair lifts faster than thick or resistant hair.
- Color Formula: The specific color formula you're using may have specific instructions.
- Professional Guidance: If you're unsure, it's always best to consult a licensed hairstylist for guidance.
Remember: Leaving developer in your hair for too long can cause damage and breakage. Always follow the manufacturer's instructions and discontinue use if you experience any irritation.
