Welcome to Styleforum.
Using a blow dryer only helped the leather to absorb whatever you put on the shoes, even deeper into the leather fibres.
There is an old saying which states, 'it isn't a party until something is broken'.
You can either live with it, or take them to your local friendly cobbler (shoe repair) to have them look at them,
or if you are willing to risk completely destroying them, get some rubber gloves, some rags, and take them outside and use some acetone...