Lightening

Lightening is a course about two seemingly opposite processes: decolorizing color-treated hair and pigmenting gray hair. What connects them is a shared foundation - working on hair without natural pigment, which requires a completely different approach than standard coloring. The course shows how to strategically tackle the toughest cases in the salon: from stripping years of dark box dye, to achieving one-hundred-percent coverage of stubborn, glassy gray hair without creating a flat, dull effect.

Bartłomiej Lacz walks you through the chemistry and logic of both processes, from hair structure to the action of specific ingredients in the mix. He explains why a low developer and longer decolorization time give a cleaner result than a high concentration used quickly, and when a three-percent developer is enough for full gray coverage. On the flipchart, he visualizes how pigment precursors work in coloring and how ammonium salts work in lightener, giving you the tools to plan your work with intention rather than just replicating formulas.

In this course you'll see

• The real meaning of coverage percentages on color - why 50% coverage won't cover 30% gray hair on the head, and how this knowledge changes your mix selection.
• The principle of working with "fresh lightener" - why mixing small batches every 15-20 minutes is the key to even decolorization from the nape to the crown.
• The technique of adding gold pigment to cool mixes for gray hair, to achieve radiance and saturation rather than a warm tone.
• Why decolorizing henna ends in a green or turquoise reflect, and how it fundamentally differs from stripping oxidative pigments.
• When a 3% developer is enough for 100% gray coverage, and when you need to reach for 9% - diagnosis based on hair structure (glassy vs. matte).
• The difference between the pigment precursor and the actual pigment - how understanding this process helps you avoid insufficient gray hair coverage.

After this course, you'll stop treating decolorization and gray hair coloring as an unpredictable lottery. You'll understand the chemical foundations of both processes, allowing you to work with intention when choosing products, timing, and technique for a specific hair structure and its history. The toughest cases in the salon - from stripping black to stubborn gray hair - will become opportunities to showcase craft built on knowledge, not luck.