The Bigen Cream Color 4-0 Dark Brown is my go-to hair color. It's so quick and easy to use with the one push application. The color is a beautiful dark brown and it covers my gray hair perfectly. Love it!

I found the Bigen Cream Color 4-0 Dark Brown to be 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 tried the Bigen Cream Color 4-0 Dark Brown and found it to be just okay. The color didn't turn out exactly as I had hoped and the coverage on my gray hair was only average. The one-push application is convenient, but I don't think I'll be repurchasing this product.

I found the Bigen Cream Color 4-0 Dark Brown to be 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've been using the Bigen Cream Color 4-0 Dark Brown for a few months now and I'm quite satisfied with it. The color looks natural and the coverage on my gray hair is good. The one-push application is convenient, although it can be a bit messy. Overall, I would recommend this product.