Find what color should i dye my hair and the perfect hair color shade! Use our hair calculator color try-on tool with quiz to explore different shades.
Results are generated by applying hair-colouring principles to your answered profile. Scores consider level compatibility, tone–skin undertone harmony (warm/cool/neutral), gray coverage efficacy, brass risk, and maintenance demand. Developer volume recommendations are based on published hydrogen peroxide concentration data (10 Vol = 3 %, 20 Vol = 6 %, 30 Vol = 9 %, 40 Vol = 12 %) and their documented effect on pigment lift.
Source-backed rules: Developer volume selection, H₂O₂ concentrations, processing times (30–45 min for permanent colour), and gray coverage efficacy comparisons (permanent > demi-permanent > semi-permanent) are derived from the encyclopaedic and peer-reviewed references listed below.
Heuristic rules: Tone–skin undertone compatibility scores, maximum safe lift by hair history (virgin / dyed / bleached), and gray coverage mix ratios are industry-practice heuristics. They approximate common professional guidance but vary by brand, product formulation, and individual hair condition. No single peer-reviewed universal table exists for these values.
Limitations: Results do not account for hair porosity, previous chemical treatment residue, the lighting conditions under which hair level was assessed, or scalp sensitivity. This tool provides general guidance only. A strand test and professional consultation are always recommended before applying any colour — especially for 3+ level lifts or previously bleached hair.
