Proof.Fit

Glycerol

5 benefits mapped to clinical evidence across supplements.

Benefit Evidence

Main Effects
Skin hydration

Hydration + barrier

TEWL↓, moisture↑

Dryness relief, +

Strong
3,369
Hydration

Hydration↑, urine↓

Plasma volume↑, endurance↑

Moderate
766
Vitality

Ammonia/HE ↓

Performance/rehydration ↑

Moderate
634
Stress resilience

Endurance +21–25%, HR↓

Fluid retention/plasma volume↑

Time-to-exhaustion, mass loss↓

Weak
178
Joint comfort

Pain/disability; +9 responders

Mobility; greater pain drop

Weak
145