Cited skincare — every flag names its source, no upsell.
Ta

Taurine

TaurineHydrator

A small amino-acid-like compound that helps hold water in skin for a smooth feel.

What it does

The EU’s ingredient database lists it as a pH adjuster (sets how acidic the product is).European Commission, CosIng (© European Union, CC BY 4.0) · uses put in plain words by Drop ↗

The evidence, graded

emergingEl-Chami et al. (2021), at the University of Manchester, treated donated human skin kept alive in a lab with taurine. It raised three proteins that seal the gaps between skin cells, which help skin hold water, and in skin cells it made those seals work better. Blocking skin's taurine carrier stopped the effect. No people were treated.El-Chami 2021 · British Journal of Dermatology ↗

Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.

Browse all 1238 ingredients — grouped by what they do, each with whatever evidence we can cite.

This page is public so a shared ingredient card always has its sources behind it — and so you can check them without an account.
Want more like this?
Every evidence-based flag cites its source, Drop tells you when your routine is complete, and it helps you simplify — instead of selling you more. The app launches on iOS and Android in October 2026. Rate my routine works today at /rate — no sign-in.