Hydrating.

Top picks (Strong tier)

• Om

  Colloidal Oatmeal

  Barrier repair · Anti-inflammatory · Hydrating

  A pharmacy-grade skin protectant proven to calm itch, redness, and dryness in eczema and other irritated skin. FDA recognised it as a Category I skin protectant in 2003, and 1% creams beat vehicle in mild-to-moderate atopic dermatitis trials.

• Dm

  Dimethicone

  Barrier repair · Hydrating

  A silicone that sits on your skin as an invisible, non-greasy shield. Reduces water loss, protects against irritants (think soap, friction, incontinence), and is FDA-recognised as a skin protectant from 1-30%. The reason your favourite primer feels silky and your barrier cream actually works under makeup.

• HA

  Hyaluronic Acid

  Hydrating

  A pure hydrator that holds water in your skin. Makes skin look plumper and smoother almost immediately.

All hydrating ingredients (33)

• Colloidal OatmealStrong evidence

  A pharmacy-grade skin protectant proven to calm itch, redness, and dryness in eczema and other irritated skin. FDA recognised it as a Category I skin protectant in 2003, and 1% creams beat vehicle in mild-to-moderate atopic dermatitis trials.

• DimethiconeStrong evidence

  A silicone that sits on your skin as an invisible, non-greasy shield. Reduces water loss, protects against irritants (think soap, friction, incontinence), and is FDA-recognised as a skin protectant from 1-30%. The reason your favourite primer feels silky and your barrier cream actually works under makeup.

• Hyaluronic AcidStrong evidence

  A pure hydrator that holds water in your skin. Makes skin look plumper and smoother almost immediately.

• Lactic AcidStrong evidence

  A gentler exfoliator that also hydrates as it works. Good entry point if you have sensitive skin and want to try acids.

• PetrolatumStrong evidence

  The gold-standard occlusive moisturiser. Locks water into damaged or compromised skin better than anything else, accelerates barrier repair, and (in newer research) actively boosts your skin's own antimicrobial defences. Cheap, non-allergenic, dermatologist-recommended for eczema, post-procedure care, and slugging.

• UreaStrong evidence

  A small molecule your skin already makes. Low concentrations deeply hydrate dry skin; higher concentrations soften thick, scaly patches. A workhorse for eczema and ichthyosis.

• AllantoinModerate evidence

  A gentle smoother and skin-soother. Reduces flakiness and helps the surface look more even.

• Aloe VeraModerate evidence

  Calms irritation and adds light hydration. The classic for sunburned or reactive skin.

• Argan OilModerate evidence

  The Moroccan kitchen-staple oil with real cosmetic data behind it. Daily use measurably improves skin elasticity in postmenopausal women. Good for dry, mature, or barrier-compromised skin without feeling greasy.

• BeeswaxModerate evidence

  A wax film former that quietly does what petrolatum does (slows water loss and shields chapped skin) without feeling slick. Most evidence comes from honey/beeswax/olive-oil cerates that beat vehicle in eczema and psoriasis trials. CIR-affirmed safe.

• Beta-GlucanModerate evidence

  A heavy-duty hydrator that also reduces irritation. Often called "better than hyaluronic acid" for sensitive skin.

• Camellia OilModerate evidence

  A lightweight Japanese plant oil that hydrates and seals in moisture without feeling heavy.

• EctoinModerate evidence

  A desert-bacteria-derived molecule that wraps skin cells in a protective water layer. Genuinely helpful for irritated, atopic-prone, or post-procedure skin.

• Galactomyces FermentModerate evidence

  A yeast-based ingredient that brightens skin tone and refines the look of pores. Made famous by SK-II essences.

• GlycerinModerate evidence

  A workhorse hydrator that pulls water into your skin. In nearly every good moisturizer for a reason.

• HatomugiModerate evidence

  A traditional Japanese botanical (Job's tears) that hydrates and calms irritated skin.

• HoneyModerate evidence

  An ancient antimicrobial that has graduated into modern wound clinics. Cochrane and meta-analytic evidence shows it heals partial-thickness burns ~4-5 days faster than conventional dressings; smaller dermatology trials show it calms atopic dermatitis flares without irritation.

• Hydrolyzed CollagenModerate evidence

  The protein your skin loses with age, broken down small enough to absorb. Multiple meta-analyses of RCTs show measurable wins in wrinkles, elasticity, and hydration after ~12 weeks. Most evidence is oral, but topical helps surface hydration too.

• Jojoba OilModerate evidence

  Technically a wax that masquerades as oil, molecularly closer to your own sebum than any other plant oil. Hydrates without clogging pores, calms inflammation, and plays well in acne-prone and sensitive routines.

• Lactobionic AcidModerate evidence

  A "next-gen AHA" that exfoliates and hydrates at the same time, with much less stinging than glycolic. Sensitive-skin or rosacea-prone users tolerate it where stronger acids fail.

• LanolinModerate evidence

  Sheep-derived wax esters that mirror the molecules in your own skin lipids. Heals cracked nipples, dry hands, and damaged lips with multiple positive RCTs behind it. Note: classic but real allergen, so patch-test if you have a wool/Balsam-of-Peru history.

• N-AcetylglucosamineModerate evidence

  A gentle brightener that fades dark spots while quietly boosting hydration. Pairs especially well with niacinamide.

• PanthenolModerate evidence

  Pro-vitamin B5. Deeply hydrates and helps repair the skin barrier, calming dry or compromised skin.

• PHAModerate evidence

  The mildest exfoliating acid. Refines texture and hydrates at the same time, and it's sensitive-skin friendly.

• PiteraModerate evidence

  SK-II's signature ingredient, a specific yeast filtrate that improves clarity and texture over time.

• Polyglutamic AcidModerate evidence

  A hydrator often pitched as "stronger than hyaluronic acid." It sits on the surface, locks water in, and helps your skin make more of its own moisturizers over time.

• Shea ButterModerate evidence

  A rich, naturally occlusive plant butter from the African karite tree. Calms eczema-prone skin, refills the lipid barrier, and (in randomized trials) is acceptable and effective enough that three quarters of pediatric AD patients use it as a steroid-sparing emollient.

• Snail MucinModerate evidence

  A Korean-skincare staple that hydrates, soothes, and helps surface damage heal faster. Especially nice on dehydrated or post-acne skin.

• Snow MushroomModerate evidence

  Often pitched as the gentler cousin of hyaluronic acid. It holds water in the skin, fades less quickly in dry air, and quietly buffers against UV oxidative stress.

• Sodium PCAModerate evidence

  Replenishes one of the actual humectant molecules your own skin makes. Levels drop in eczema and with age, so topping it up genuinely helps dry, dehydrated, or atopic-prone skin feel less tight.

• SqualaneModerate evidence

  A lightweight oil that mimics what your skin already makes. Softens and seals in hydration without feeling greasy.

• Lactobacillus FermentAnecdotal evidence

  A "postbiotic" (dead probiotic bits) that talks to your skin microbiome without adding live bugs. Patches up a leaky barrier and is friendly even on very reactive skin.

• Yam Root ExtractAnecdotal evidence

  The ultimate vegan alternative to snail mucin. It provides the same deeply hydrating, stretchy texture but is derived entirely from wild yam roots. Very soothing for sensitive skin.