I have a sensitive scalp and previously bleached hair—what precautions should I take before using this red-brown permanent color at home?

If your scalp is sensitive or your hair is heavily bleached, fragile, or recently chemically processed, the product guidance recommends performing a strand or sensitivity test before applying the color all over. A strand test on a small hidden section shows how the red-brown shade develops and whether the hair tolerates the process, while a sensitivity test on skin (typically behind the ear or on the inner forearm) helps reveal any reaction to the dye components.

Permanent dyes can place more stress on compromised hair fibers, so the cream's mask-like format may feel less harsh than thinner formulas, but caution is still appropriate. Avoid applying to broken or irritated scalp skin, and consider spacing out chemical services to reduce overlap of treatments.

• Prepare a small amount of the mixture and apply to a discreet strand; check both color result and hair feel after the recommended time.
• For the sensitivity check, cleanse a small skin area, apply a dab of the prepared product, rinse after the suggested period, and observe for 24–48 hours.
• After coloring, give extra attention to moisture: use a conditioning mask and wash with a gentle, sulfate-light shampoo in lukewarm water.

Gentle washing and reduced frequency of washes help preserve the vibrancy of the warm copper-red tone and keep the hair surface smooth. If you are pregnant, breastfeeding, or managing a chronic skin or scalp condition, consult a specialist before use.

Because bleached or fragile hair can be more porous, the shade may appear slightly more intense on those areas during the strand test, so adjust full-head timing accordingly and avoid leaving the cream longer than instructed.