Yes, each layer will darken your project even more. You can also start with a lighter color Gel Stain and layer on darker colors.
Click on the first photo and follow along with this photo tutorial as we finish a walnut table with 1 coat of Java Gel Stain over Nutmeg Gel Stain. Completed with 3 coats of Gel Satin Topcoat. Table design by John Harryman.