Is this product safe for sensitive skin, and do I need to do a patch test?

Eyebrow and eyelash dyes are among the more reactive cosmetic products, so safety precautions are critical. You must perform a patch test 48 hours before each use, even if you have successfully used similar products in the past. Skin sensitivity can change over time, and a previous tolerance does not guarantee future safety.

Do not use this product if you have ever had a reaction to hair or skin dye. If your skin is currently sensitive, irritated, or if you are unsure whether this type of colouring is suitable for your specific skin condition, consult a beauty professional or dermatologist before proceeding. Be especially careful when applying near the eyes, as the eye area is particularly delicate. If you experience any redness, itching, or swelling during the patch test or application, rinse immediately and discontinue use.