Triethanolamine

Triethanolamine (TEA) is a small organic compound derived from the reaction of ethylene oxide and ammonia. It serves multiple functions within skincare formulations, most commonly as a buffering agent that neutralises acids and helps stabilise pH levels, and as an emulsifier that helps bind water and oil-based ingredients together.In skincare products, TEA works behind the scenes to maintain product stability and consistency. It is found in approximately 3.7% of skincare formulations across various product types, from cleansers to moisturisers.

TEA functions as a buffering system, meaning it resists changes in pH when acids or bases are introduced to a formula. By maintaining a stable pH, it helps ensure the product performs as intended and remains gentle on skin. Additionally, TEA acts as an emulsifier by positioning itself between water and oil molecules, allowing these otherwise incompatible substances to blend smoothly.

TEA is a processing ingredient, so its presence in your routine is not something you need to actively manage. It works passively to keep your products properly formulated. If using multiple products, there is no additional benefit to seeking out higher concentrations of TEA across your routine.

Triethanolamine is generally well-tolerated in cosmetic products and considered safe within established usage concentrations. It poses minimal risk of allergic sensitisation based on available surveillance data.