Purobio 20 volume Oxydant Developer - 1000ml

When you want to achieve a lift of one or two levels of hair color or if you have more than 50% grey hair you will need to use 20 volume developer for 100% grey coverage with permanent hair dye. Less than that and you may be able to get away with less developer for hair colour, and your grey hair will look like highlight on it . Here is a Purobio 20 volume developer which provides your hair a better bleach to lighten hair that is naturally blonde in a gentler fashion. Strength: 20 volume developer is commonly used in hair color and lightening processes when you want to lift the natural hair color by one to two levels. Sensitivity Test: Before using any hair color product with 20 volume developer, it's crucial to perform a patch test or sensitivity test to check for any allergic reactions or adverse effects.