Dry

First, beware that you’re not confusing dehydrated with dry; dehydration is caused when water is stripped from skin by products and environmental factors, and dryness defines skin that produces little to no oil naturally. While dehydrated skin needs products that replenish water levels with a powerful humectant like hyaluronic acid, truly dry skin needs oil-based (albeit non–pore clogging) ingredients to keep the moisture barrier intact.