At the beginning of your routine, when hair has a significant buildup of products or residue, use the treatments every day or every 2 days for 1 month, depending on your hair's needs.
Once your hair has regained more lightness, cleanliness, and suppleness, gradually space out the treatments to every 3 to 4 days to maintain the results.
Intensive phase: every day to every 2 days for 1 month.
Maintenance phase: every 3 to 4 days.