Weatherstripping

Just wondering if its possible to restore dry weatherstripping?
I've got everything and none of it is ripped its just abit dried out and needs to be streatched and re-moistureized or something. Is there anyway that this is possible. or do i need to fully replace all the weather stripping? This is just the weather stripping for the pass/driver door and windows, also the back panel windows.

 

Try some silicone spray, but if it's dried and cracked, it's time to replace it.

 

It's not so much cracked but it is fairly dry. I heard maybe moisturizing it with a lubricant and then "stretching" it. Will work?

 

Once it's dry it's dry....