Persistent Color Bleeding with Kolesterol 2 Hair Dye

I dyed my hair black with Kolesterol 2 on October 9, but even after 10 days, the dye is still bleeding from my hair, staining my pillow and everything it touches. I’ve used this brand and color for years without any issues, but this time it’s been a complete mess. I checked the expiration date, and there doesn’t seem to be any issue with the product’s freshness.

I’m reaching out to understand why this is happening and to find a solution. Kolesterol, please address this issue, as I trusted this product for years and am now facing a frustrating problem.