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This article is a part of CNN Underscored’s Guide to Sleep, a weeklong focus on everything you need to sleep better. We’ll be featuring new products, tips and exclusive deals all week, so check in ...

We tested 6 sleep masks to compare their overall comfort and ability to deliver total darkness during sleep. There’s just one we recommend buying.

Skin concern: While sheet masks are best for hydrating, you can find masks that address other skin concerns, too. “Along with boosting moisture, there are a number of sheet masks on the market that ...

Red light therapy (RLT) involves exposing the body to low-wavelength red or near-infrared light (IRL). Red and near-IRL differ slightly in terms of wavelength and visibility. Red light is visible to ...