Reference Tables
Quick-reference tables, charts and standards.
Hair Developer Volume Guide
10, 20, 30 & 40 volume developers — peroxide percentages, lift levels, processing times and mixing ratios.
Hair Colour Level Chart
Levels 1–10 with natural underlying pigments, tone descriptions and developer lift expectations.
UK Salon Service Pricing Benchmarks
Average UK prices for cuts, colour, highlights, balayage and more — by region.
Chemical Processing Time Reference
Processing times for colour, bleach, toner, perm, relaxer and keratin — by hair type.