Some products are made for it
Some skincare products are specifically formulated to remain on your skin overnight. Traditional hydrogel patches often are not.
Follow the stated wear time
If a product says 15 to 20 minutes, follow those instructions. Sleeping in a patch designed for short wear may not increase its benefits.
If overnight hydration is your priority
Consider pairing your regular eye-mask routine with an overnight moisturising eye product.
Use products as intended
Skincare is not a competition to see how long you can leave something on. The best results usually come from using products exactly as intended.