Great product to use as a pinwash! I us to make my on washe. I have used oil paints and have also used acrylic washes. I like this so much better. It flows great. It is very easy to use. Dark brown is the perfect color for olive drab or ww2 German 3 tone tank camo. Sometimes black can be to harsh and light brown can be to light in my opinion. If you use acrylic paint, be sure to use a clearcoat to protect the finish. I like to use pledge floor gloss(also known as klear).However it has been discontinued. I have heard that there is a product called quickshine that is similar but I have not tried it. Make sure that your clearcoat has fully cured not just touch dry.I like to give it a week just to be on the safe side. You can use q tips that are slightly damp with thinner to remove excess wash. I use Revell enamel thinner with no problems. I also prefer to use a small paint brush instead of q tips because it gives me better control and does not leave lint. Anyhow, this is the only product that I use for pinwashes.