supp.fit

Skin hydration

How much water the outer layer of skin holds. It is measured by corneometry, which reads the skin's electrical capacitance, and by water loss through the skin.

17 supplements analyzed and ranked by clinical evidence.

Supplements17

Supplement Evidence

Hyaluronic Acid
Strong

Hydration +6.4%

Barrier/moisture +10.6%

1318 studies·13 benefits
Collagen
Strong

Hydration↑ TEWL↓

Hydration +28%

2951 studies·14 benefits
Glycerol
Strong

Hydration + barrier

TEWL↓, moisture↑

Dryness relief, +

304 studies·5 benefits
Vitamin E
Moderate

Skin hydration ↑

Dryness/TEWL ↓

1815 studies·17 benefits
Pantothenic Acid
Moderate

Hydration ↑, TEWL ↓

Barrier repair, +SCH

71 studies·11 benefits
Birch Bark
Moderate

Faster closure, +1 day

Better skin hydration-like appearance

6 studies·3 benefits
Evening Primrose Oil
Moderate

Hydration up, TEWL down

+8.9 CORN units

Dryness symptoms improved

48 studies·10 benefits
Sodium Bicarbonate
Moderate

Hydration/softening −4.16 min

Hydration/softening +12.35 min

558 studies·10 benefits
Phosphatidylcholine
Moderate

↓Hydration, ↑TEWL

-

296 studies·17 benefits
Castor Oil
Weak

Hydration via tear retention

Tear stability +25%

35 studies·4 benefits
Rosemary
Weak

Redness/ROS ↓, ~22%

Hydration/wound recovery ↑

77 studies·15 benefits
Avocado
Weak

Firmness/elasticity improved

No hydration change

47 studies·16 benefits
Calendula
Weak

Hydration + firmness

+ significant

Lower TEWL

25 studies·7 benefits
Docosahexaenoic Acid
Weak

Hydration indirect, severity −11.2

Inflammatory shift, >10-fold

1405 studies·20 benefits
Flaxseed Oil
Weak

Hydration +46 µS

TEWL -10%/50%

116 studies·17 benefits
Althaea Officinalis
Weak

Engorgement severity ↓

P<0.001

6 studies·10 benefits
Borage Oil
Weak

Hydration ↑, TEWL ↓

Redness ↓

Barrier ↑

16 studies·8 benefits