Snapshot
- Overview
- A pH adjuster that keeps formulas comfortable and skin-friendly.
- Category
- Sensitive Skin
- Type
- pH Adjuster
Tromethamine
Tromethamine is an organic amine compound used in formulas as a pH adjuster and buffering agent. It's chosen to keep product acidity within a comfortable range for skin, and has a long history of use in personal care.
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By the numbers
Tromethamine in our database
Calculated from the 1,109 products we track · updated November 2026.
45
products contain it
About 1 in 25 of the 1,109 products we track.
#23
typical spot on the label
Usually further down the list, which typically means a smaller, supporting amount.
$3–$135
price range
It shows up at every price point. You don't need to pay more to get it.
Most common in
Often paired with
Our take
Is Tromethamine a Good Ingredient?
It rates Good as an effective, stable pH buffer that improves formula comfort and consistency, backed by an extensive use history. Mild irritation may occur in very acidic systems or at higher concentrations, but finished-product levels are usually well tolerated.
What it does
Skin Benefits
Helps keep products within a skin-comfortable pH, minimizing the chance of tingling from acidic formulas, and supports stability so performance stays consistent over time.
Where you'll find it
Uses in Skincare & Cosmetics
Employed in gels, serums, and exfoliating toners as the neutralizing base component. Present across both leave-on and rinse-off products, though not a treatment ingredient itself.
Before you use it
Safety
Generally safe in cosmetics at typical concentrations with low irritation potential on intact skin. Can irritate eyes or mucous membranes in concentrated form; this risk is minimal in finished products. No widely noted cosmetic regulatory restrictions when used as directed.
Products with Tromethamine
