amakarevic said:Is there water based?
I don't want it to become any darkerI recommend oil. Harder and self levels better. Or you can use a hybrid. Think of it as oil and waterborne mixed. Best of both worlds. Here is a link to the 1 I have used many times with great success. http://www.sherwin-williams.com/homeowners/products/catalog/waterbased-oilmodified-polyurethane/?referringCategory=interior-paint-coatings/wood-stains-sealers-clear-topcoats/&N=2025522611