Hair dye Alkotest Olia 4.12 Irisdescent Dark Brown — permanent hair colour

Alkotest Olia 4.12 Irisdescent Dark Brown is a permanent hair colour formulated to deliver a long-lasting dark brown shade with cool iridescent undertones. The kit contains the colourant formulation and the developer components necessary for application and is suitable for both professional and home use. Final results will vary depending on the starting hair colour and hair condition; this product is intended to cover grey hair, change natural shade, or refresh existing colour.

Advantages

The formula provides permanent coverage with pigments designed to deposit an even dark brown tone enriched with subtle iridescent highlights. The combined colourant and developer system aims to produce uniform colouring and reliable grey coverage while maintaining manageable application and predictable development times. The product is presented for convenient at-home or salon use and can be integrated into standard hair colouring routines.

Suitable for

• Covering grey or white hair to achieve full permanent coverage
• Changing natural hair shade to a dark brown tone with cool, iridescent notes
• Refreshing or correcting previously coloured dark brown hair
• Use in professional salon services or controlled home application

Key specifications

• Permanent oxidative hair colour formulation
• Shade: dark brown with iridescent (cool) undertones
• Includes colourant and developer components for application
• Intended for full coverage and long-lasting pigment retention
• Suitable for use on natural and previously coloured hair

How to use

Follow the instructions included with the product for precise mixing ratios and development times. Mix the colourant and developer immediately before application, apply to dry, unwashed or lightly damp hair as indicated by the provided instructions, and ensure even saturation from root to tip. Monitor development time according to the initial hair colour and desired outcome, then rinse thoroughly and apply any neutralising or after-treatment recommended in the leaflet. Perform an allergy test 48 hours prior to use if you have not used oxidative hair dyes before.

Usage recommendations

For optimal and consistent colour results, perform a strand test to confirm the final shade and adjust development time as needed. Use appropriate protective gloves and follow safety guidance included with the product. If hair is heavily damaged or chemically treated, consider a consult with a professional colourist to select the correct developer strength and pre-treatment routines.