Hair Dye Nr.4F, without PPD. Cool Chestnut color, of a cool base tone, with blue reflection to combat yellow undertones and golden sheen. Specifically designed to deliver a permanent, durable and intense color. Full...
Cool Hair Color Bases 4F – 5F – 6F – 7F – 8F – 9F – 10F – 1.1 Blue-Black shade – are base shades with bluish-grey reflection to neutralize yellow or golden undertones.
Not recommended for application on hair color levels 7, 8, 9, or 10 with 50% of gray hair, as its bluish-grey reflection helps enhance gray hair, adding more shine and making it more visible.
Recommended to apply on dark hair color levels or dark tones to create naturally looking hair roots preventing yellowish undertones from appearing.
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