Your softshell garment could be soaking up water just because it is dirty. First, try cleaning it with Nikwax Tech Wash®, and if it is fairly new, or recently re-waterproofed, the Durable Water Repellency (DWR) will be revitalized just from cleaning. But, once the garment has been thoroughly worn, you will need to add DWR, using Nikwax SoftShell Proof™, after cleaning first with Nikwax Tech Wash®.
Sofshell Proof Wash10oz