I recently tried the Bigen Cream Color 4-0 Dark Brown and it worked well for me. The one push application is easy to use and the color is a nice dark brown shade. It covers my gray hair decently. Good product overall.

The Bigen Cream Color 4-0 Dark Brown is my go-to hair color. The one push application is so convenient and the color is a beautiful dark brown. It covers my gray hair perfectly and lasts a long time. Highly recommend!

I love the Bigen Cream Color 4-0 Dark Brown! It is so simple to use with the one push application. The dark brown shade is perfect for covering my gray hair. Plus, the smart saving feature allows me to use it for multiple applications. Highly recommend!

I recently tried the Bigen Cream Color 4-0 Dark Brown and I'm satisfied with the results. The one push application is easy to use and the color is a nice dark brown shade. It covers my gray hair well. Good product overall.

The Bigen Cream Color 4-0 Dark Brown is alright. It did cover my gray hair, but I found the one-push application to be a bit messy. The color turned out fine, but I wish it lasted longer. I might try a different brand next time.