General posts on humectants
Better crafting through chemistry: Humectants
Humectants: Questions, questions, questions
Does glycerin pull water from your skin when the humidity is low?
Humectants: Other benefits
Posts on individual humectants
Butylene glycol & dipropylene glycol
Glycerin: The science
Honey: Nature's tastiest humectant?
Honey: Some studies I've found on about its anti-microbial reputatation
Honey: Using it in our products
Honeyquat
Hyaluronic acid (scroll down a bit)
Hyaluronic acid (way more information)
Hydrovance
Panthenol
Panthenol - a closer look
Propylene glycol
Sorbitol