I tried the Bigen Cream Color 4-0 Dark Brown and it was just average. The color turned out fine, but the coverage on my gray hair was not as good as I expected. The one-push application was convenient, but the overall results were not impressive.

Overall, I'm quite satisfied with the Bigen Cream Color 4-0 Dark Brown. The color is nice and the coverage on my gray hair is good. The one-push application is convenient, although it can be a bit messy. I would recommend this product to others.

I tried the Bigen Cream Color 4-0 Dark Brown and it was just okay. The color was fine, but the coverage on my gray hair was not as good as I had hoped. The one-push application was easy to use, but I may try a different brand next time.

I absolutely love the Bigen Cream Color 4-0 Dark Brown. It's so easy to use and the color looks amazing on my hair. The coverage on my gray hair is flawless and it lasts for a long time. Highly recommend this product!

I've tried many hair colors, but the Bigen Cream Color 4-0 Dark Brown is by far my favorite. The color is rich and the coverage on my gray hair is amazing. The one-push application makes it super convenient too. Highly recommend this product!