I'm happy with the Bigen Cream Color 4-0 Dark Brown. The one push application is convenient and mess-free. The color is a nice dark brown and it covers my gray hair nicely. Overall, a good product.

I have mixed feelings about the Bigen Cream Color 4-0 Dark Brown. The one push application is convenient, but the color didn't turn out as expected. It was a bit too reddish and it didn't fully cover my gray hair. It's an average product for me.

I've been using the Bigen Cream Color 4-0 Dark Brown for a few months now and I'm happy with the results. The color is a beautiful dark brown and it covers my gray hair nicely. The one push application is so convenient and mess-free. Recommended!

I've been using the Bigen Cream Color 4-0 Dark Brown for a while now and it never disappoints. The one push application is a breeze, and the color is a nice dark brown shade. It covers my gray hair effectively. Great product!

I've been using the Bigen Cream Color 4-0 Dark Brown for a while now and I'm satisfied with the results. The one push application is convenient and mess-free, and the color is a nice dark brown shade. It covers my gray hair well. Good product!