What is the 40 ml size intended for and how many applications does it provide?

The 40 ml format is a compact, single‑use‑oriented size. It is practical when you want to trial the Light Brown (V62) shade before committing to a larger bottle, when you need a quick colour refresh before an event, or when you only need to treat short hair, a fringe, or visible regrowth at the roots. For shoulder‑length hair of average density, one tube usually covers a single full application. Very short or fine hair may allow two uses, while long, thick hair may require the entire tube for one session. Because the product is a shampoo base, you apply it to wet hair, massage to distribute the pigments evenly, leave it on for the time specified on the packaging (typically 3–10 minutes), then rinse thoroughly. After opening, store the tube with the cap tightly closed, away from direct sunlight and heat, and use within the period indicated by the PAO (period after opening) symbol. Do not dilute the product in the bottle; if a lighter deposit is desired, mix a portion with a regular shampoo in your hand at the time of use.