L'Oreal Paris Preference Hair Dye - Black P11

Apply a small amount of the mixed colorant crème and developer crème behind your ear or on the inner elbow. Leave it undisturbed for 48 hours. If you experience any redness, itching, or swelling, do not use the product.

Each kit includes one caring colourant crème, one developer crème, one Colour Lock Conditioner, and one pair of protective gloves.

Yes, L'Oréal Paris Preference is a permanent hair dye, meaning the color will not wash out. It will grow out as your hair grows.

While the product is generally safe, an allergy alert patch test 48 hours before each use is crucial, especially if you have sensitive skin, to check for any adverse reactions.

Luminous cool reflects refer to the subtle, cool-toned undertones and shimmering qualities in the black dye that catch the light, giving your hair a multi-dimensional, vibrant, and shiny appearance rather than a flat, dull black.

It is generally recommended to wait at least 4-6 weeks between permanent coloring applications to allow your hair to recover and to minimize potential damage.

For very long or thick hair, it is often recommended to purchase two boxes of hair dye to ensure complete and even saturation of all your hair for the best results.

Ensure the product was applied evenly to grey areas first and processed for the full recommended time. Hair texture can sometimes require slightly longer processing. Ensure thorough saturation.

The final color can be influenced by your original hair color and its condition. For future applications, strictly adhere to processing times. If too dark, washing with a clarifying shampoo may slightly soften the color over time. If too light, re-application after a week may be considered after another patch test.

Ensure you used the provided Colour Lock Conditioner after rinsing. This conditioner is specially formulated to nourish hair. For ongoing care, incorporate deep conditioning treatments into your routine.

Immediately rinse hair and scalp thoroughly with cool water. Discontinue use and consult a medical professional. This highlights the critical importance of performing a patch test 48 hours before every use.

Ensure the mixture was thoroughly shaken to combine ingredients uniformly. During application, distribute the product evenly through the hair, using clips to section hair for better control and coverage. Applying to dry, unwashed hair as instructed also helps.