My husband’s hands have been cracking at the knuckles for about three weeks, worse right when he wakes up.

I got a humidifier for the bedroom last Tuesday and set it to 45%. I also switched his hand cream to a fragrance-free one around the same time, which I probably shouldn’t have done together, since now I can’t tell which one (if either) is actually helping.
It’s only been six days. Has anyone tracked how long it took before humidity alone made a difference, or is a week too soon to tell?
