Tromethamine in Cosmetics: Safety, Nitrosamine Concerns, and Why Transparency Matters In a recent post we examined tromethamine in bronzer. The issue, however, isn’t limited to bronzers — tromethamine (also called tris(hydroxymethyl)aminomethane or THAM) is a common buffer and pH adjuster used across skincare and makeup. While independent reviews consider it safe at typical use levels, …
