I use a modeling pack at least once a week. Commercially available sheet masks are great, but nothing beats a modeling pack for reducing skin temperature and brightening complexion. In particular, if I apply a generous amount of whitening ampoule first and then add a cool modeling pack on top, I feel like the ampoule's ingredients are firmly pressed into my skin instead of evaporating into the air.
When I peel off the pack and see that cool, bouncy texture on my skin, I feel like all the stress from winning the lottery has melted away. A tip: Apply it thickly around the edges so that when you peel it off, it comes off cleanly without leaving any powder behind! It only takes about 20 minutes to recreate the effects of a treatment at an aesthetic salon, so I highly recommend everyone give it a try on a weekend evening. Afterward, your skin tone will definitely brighten and your complexion will look clearer.