"Increased dryness" refers to a situation where there is a noticeable lack of moisture or a decrease in the amount of water present in something. Full definition
Groisman et al. (2007) found increased dryness based on the Keetch - Byrum forest - fire drought index in northern Eurasia, a finding supported by Dai et al. (2004a) using the PDSI. (ipcc.ch)
Also keep in mind that your ability to retain water and naturally produce hyaluronic acid declines as you age, which can exacerbate increased dryness, fine lines, wrinkles, and sagging. (clinique.com)
A specter of drought The sediment cores, taken by University of Florida scientist David A. Hodell and colleagues, indicate that a period of increased dryness set in about 800 AD. (whyfiles.org)