Hydrators & Humectants
Hyaluronic acid and humectant hydrators
Hyaluronic acid, glycerin, urea — the safest layer in any routine, even on the strongest prescriptions.
Humectants pull water into the upper skin layers. They have effectively zero compatibility issues with prescription skincare — and they make irritating actives more tolerable.
Ingredients in this category
Allantoin
Soothing, keratolytic at higher concentrations.
Beta-Glucan
Oat/yeast-derived polysaccharide; hydration + soothing.
Betaine
Sugar beet-derived humectant with anti-irritant effect.
Butylene Glycol
Humectant and solvent; conditioning.
Caprylyl Glycol
Humectant + preservative booster.
Ectoin
Extremophile-derived osmoprotectant.
Glycerin
Classic humectant; attracts water to skin.
Hexylene Glycol
Solvent + humectant.
Honey
Natural humectant and mild antibacterial.
Hyaluronic Acid
Hygroscopic polymer that holds 1000x its weight in water.
PPG-Propanediol
Emulsifier/co-solvent.
Panthenol
Humectant that soothes and repairs barrier.
Pentylene Glycol
Humectant with mild preservative boosting.
Polyglutamic Acid
Polymer 4x more hydrating than HA; forms a moisture film.
Propanediol
Plant-derived humectant; solvent for actives.
Propylene Glycol
Widely-used humectant and penetration enhancer. Can trigger irritation or contact dermatitis in eczema-prone, sensitive, or compromised-barrier skin.
Snail Mucin Filtrate
K-beauty hero; hydrating and reparative.
Sodium PCA
Natural moisturizing factor (NMF) component.
Sorbitol
Sugar alcohol humectant.
Trehalose
Sugar that protects cells from dehydration.
Urea
Keratolytic humectant at higher %, barrier repair at lower %.
Check your routine against your meds.
BlendSafe checks 21+ hydrators & humectants ingredients against your medication list in seconds.