Ideally, you should refer to the label of the garment. Remember to fully zip your product and to close the pockets and vents under the arms.
Your jacket or pants are machine washable at 40 degrees. Use a small amount of liquid detergent. You can use a conventional detergent or a suitable product such as Nikwax Tech Wash
No fabric softener or laundry powder! Products containing chlorine or stain removers should also be avoided.
Machine washing your GORE-TEX® products will remove dirt and filth that can clog the membrane "pores".
GORE-TEX® recommends cleaning at home. If you have your garment dry washed by a professional, make sure a distilled hydrocarture solvent is used for rinsing and that a water-repellent spray is applied before drying.
Drying is a crucial part of the process, it will revitalize the water repellency of your GORE-TEX® garment. You can let your jacket dry in the open air or use your dryer set in a delicate program.
Once the garment is dry, it is recommended that your tumble dry it for another 20 minutes to revive water repellency. Alternatively, you can iron it (iron in delicate mode, without steam), without forgetting to put a towel between the garment and the iron.
The ideal solution, of course, is the additional dryer + ironing combo to revive the DWR (i.e. Durable Water Repellent) as much as technically possible.
You can then apply a waterproof finish to your jacket if you wish, because the water repellency of your jacket or pants can deteriorate over time. If water repellency no longer reactivates, apply a new water-repellent treatment by spraying the exterior of the garment.