Colour processing times vary depending on whether the hair has been colour-treated before or not. Just follow this simple method:
Application on virgin (never before coloured) hair
Mix DCM colour 1:1 with your chosen developer strength. First apply to the lengths and ends of the hair and process for 15 minutes. Then apply to the roots, lengths and ends and process for 30 minutes.
Re-Touch application
Mix DCM colour 1:1 with your chosen developer strength. First apply to the re-growth area and process for 30 minutes. Then dampen the hair with luke-warm water and emulsify the colour throughout to create a more uniform result and leave for a further five minutes.
High-Lift tone application
Mix DCM colour 1:2 with 40 Volume developer. First apply to the lengths and ends of the hair and process for 20 minutes. Then apply to the roots, lengths and ends and process for 45 minutes.
High-Lift re-growth application
Mix DCM colour 1:2 with your chosen developer strength. First apply to the re-growth area and process for 45-55 minutes. Then dampen the hair with luke-warm water and emulsify the colour throughout to create a more uniform result and leave for a further five minutes.