L'Oreal Paris Preference Permanent Hair Dye - Black

L'Oreal Paris Preference is a permanent hair dye, meaning the color will not wash out. It will gradually fade over time and grow out with your natural hair. The Fade-Defying SYSTEM helps to maintain vibrancy for several weeks.

Yes, absolutely. An allergy alert patch test must be conducted 48 hours before each and every application, even if you have used this or other hair color products before. Allergies can develop suddenly.

It is generally recommended to wait at least two weeks after a perm, relaxing treatment, or chemical straightening before coloring your hair. Always consult the instruction leaflet for specific guidance regarding chemically treated hair.

For very long (below shoulder) or thick hair, it is often recommended to use two boxes of dye to ensure full saturation and an even color result.

It's generally advised to wait at least 4-6 weeks before re-coloring your hair to minimize potential damage. For unsatisfactory results, consult a professional hairdresser for advice on correction.

Yes, L'Oreal Paris Preference Permanent Hair Dye in Black 1 is formulated to provide 100% grey coverage, including stubborn greys. Ensure even application and the full 25-minute processing time for best results.

Ensure you followed the processing time exactly (25 minutes) and applied the product evenly. If hair was overly porous or previously colored with lighter shades, results may vary. Consider re-applying after a few weeks following all instructions and patch testing again.

This often occurs due to uneven application. Ensure full saturation of all hair strands during application. For roots, apply thoroughly first, then distribute through lengths. For overall unevenness, a professional might be needed for correction.

Immediately rinse the product out of your hair and off your skin. Do not use the product again. Seek medical advice if irritation persists or worsens. This highlights the critical importance of the 48-hour allergy alert patch test prior to every use.

Apply a barrier cream (like petroleum jelly) along your hairline before applying the dye to prevent skin staining. For fresh stains, gently wipe with a damp cloth and mild soap. For surface stains, follow specific cleaning advice for the affected material; act quickly.

While the product claims to nourish hair, individual hair types react differently. Ensure you used the provided conditioner. Follow up with deep conditioning treatments, hair masks, and use gentle, sulfate-free shampoos and conditioners designed for colored or damaged hair.