Taurine
Explained
Taurine is an amino acid that is found in human skin as an osmolyte. An osmolyte is a small molecule that cells use to hold onto water and stay comfortable under stressful conditions.
In skin cell studies, taurine accumulation helps cells maintain hydration in low-humidity environments. Some dermatology research on osmolytes also link taurine to barrier support. Research also suggests that osomolyte systems can be disrupted in photoaged skin.
One animal study reported tropical taurine improved barrier function and collagen signaling, while another one found oral taurine can lessen UVB-related damage. It is important to note that evidence for taurine in skincare is mostly preclinical, meaning further studies are needed.
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