all my leather are treated with obernaufs leather conditioner.

a warm soapy water, wipe the leather for dirt and then dried off with towel or rags. dried it further more under the sun for 1/2 hour.

then put the obenaufs and let it dry under the sun light for 2-3 hours. let it completely dry for 24 hours.

after that, for that shine, give it a good buff with horse hair brush till u finally see the shine.

a bit more work sure but never the less i kinnda enjoy cleaning my leather stuff.