Decolor Powder Hair Colour: A Complete Guide
Decolor powder is a staple for anyone who wants to lift dark pigments and achieve a clean canvas before applying a new shade. Whether you are a salon professional or a DIY enthusiast, understanding how to mix, apply, and process the powder safely will give you consistent results and protect the hair’s integrity.
What Is Decolor Powder?
Decolor powder, also known as bleaching powder, is a finely milled peroxide‑based formula that reacts with a developer to create the bleaching agent. The powder itself contains no peroxide; it must be combined with a liquid developer (usually hydrogen peroxide) to become active. The resulting mixture lifts the natural or previously dyed colour, making it easier for the new colour to show true tones.
Choosing the Right Developer Volume
Developers are measured in “volume,” which indicates the percentage of peroxide they contain. The most common volumes are 10, 20, 30, and 40. Each level serves a specific purpose:
- 10 volume (3% peroxide) – Gentle lift, ideal for subtle colour changes or for use on fine, damaged hair.
- 20 volume (6% peroxide) – Standard lift for most hair types; lifts 1‑2 levels and is safe for most home applications.
- 30 volume (9% peroxide) – Stronger lift, capable of removing 2‑3 levels; best for darker hair that needs noticeable lightening.
- 40 volume (12% peroxide) – Maximum lift, used for dramatic colour changes or when a dramatic lift is required; should be used with caution and only on healthy hair.
Picking the right volume depends on your hair’s current colour, condition, and the desired level of lift. As a rule of thumb, start with the lowest volume that will achieve the result you need. Higher volumes increase the risk of damage and may cause uneven colour if not applied correctly.
Step‑by‑Step: Mixing Decolor Powder with Developer
- Gather your supplies. You will need decolor powder, the appropriate developer, a non‑metallic mixing bowl, a tint brush, gloves, and a timer.
- Measure the powder. Use the ratio recommended by the manufacturer—most powders recommend a 1:2 or 1:1.5 powder‑to‑developer mix. For example, 30 g of powder mixed with 60 ml of 20 volume developer.
- Add developer. Pour the developer into the bowl first, then add the powder. This order helps prevent splashing.
- Mix thoroughly. Stir with a tint brush until the mixture is smooth and free of lumps. The consistency should be creamy, not runny.
- Check
