1. Diagnose the canvas
Map natural level, previous color, porosity and condition before deciding what the formula needs to change—and what the hair can safely support.
A formula only makes sense in relation to the hair in front of you. Blondr teaches a repeatable way to read the canvas, define the target and choose depth, tone and product with intention.
Next lesson
Hair color formulation
From theory to client history
Use Blondr’s brand-independent formula app to keep each zone, ratio, timing and observation connected to the client.
Explore the formula appMove from copying shade numbers to understanding the decisions that make a formula work—and save the full context so you can improve it next time.
Map natural level, previous color, porosity and condition before deciding what the formula needs to change—and what the hair can safely support.
Translate the consultation into depth, tone, coverage and maintenance goals. A clear target prevents several competing ideas from ending up in one bowl.
Choose product, tonal direction, developer and ratio as connected decisions. Learn why changing one variable can change the entire result.
Record application order, timing, observations and final result. Good formula history turns each return visit into better information rather than a fresh guess.
Your educator
Ida Gunell
Aveda Master Educator · colorist
“The goal is not to memorize more recipes. It is to build a calm formulation process you can repeat across different clients and professional color systems.”
Professional formulation starts with diagnosis: natural level, artificial pigment, underlying warmth, porosity, condition and target. Product, tone, depth, ratio and developer should all answer that specific canvas.
No. The same shade combination can behave differently depending on starting level, previous color, porosity, application order and development time. A useful formula record includes that context.
Yes. Ida teaches transferable color theory and decision-making. Always apply those principles alongside the instructions and safety guidance for the professional color line you use.
Save each zone separately where relevant, including product line, shades, ratio, developer, application order, development time, starting canvas and observations about the result.
Made for life behind the chair
Watch concise lessons between clients, then return to complete services whenever you have time to go deeper.
Open Blondr