Frequently Asked Questions

Get answers to common questions about Double process.

Appointments typically run between 2.5 and 5 hours depending on starting color, hair length, density, and desired lift. Consultation, lightening, rinse, and toning all factor in. We'll give a precise estimate when you book.

When performed correctly, damage is minimized through strand testing, controlled developer selection, and bond-building treatments. We assess hair and extensions first and recommend pre/post-care to protect elasticity and integrity.

Maintenance varies by root growth and chosen shade: natural blondes often return every 6–8 weeks, while fashion colors may need more frequent toning. We create a custom schedule to preserve color and health.

Yes. The two-step lightening and toning method is essential for platinum and pastel results. Very dark hair may require multiple sessions and careful toners to maintain hair strength.

Yes. We conduct strand tests to determine achievable lift and sensitivity patch tests when needed. These checks inform processing times and help prevent unexpected results or reactions.

Avoid heavy oils, clarifying shampoos, or recent chemical services 48–72 hours before your appointment. Clean, product-free hair ensures even lift. We'll provide a detailed pre-appointment checklist.