Datem

Datem (diacetyl tartaric acid esters of monoglycerides) is a naturally derived emulsifier and emollient commonly used in skincare formulations. It originates from vegetable oils and is classified as a food-grade ingredient, which contributes to its safety profile in cosmetics.In skincare products, datem serves multiple purposes: it helps bind water and oil-based ingredients together, conditions the skin and hair, and improves the overall texture and spreadability of formulations. Its mild nature makes it suitable for a broad range of product types, from creams to lotions.

Datem is an emulsifier, meaning it has a molecular structure with both water-loving and oil-loving regions. This allows it to hold water and oil together in a stable suspension, preventing separation and ensuring an even consistency.As an emollient, datem also deposits a light protective layer on the skin's surface, which helps minimise transepidermal water loss (the natural evaporation of moisture from skin) and supports the skin barrier. This dual action makes it particularly useful in moisturising formulations.

Datem is typically incorporated by manufacturers during formulation and does not require special handling at home. Products containing datem should be applied as directed — usually once or twice daily depending on the specific formulation and your skin's needs. It works well in combination with other conditioning and hydrating ingredients, so layering moisturisers or serums is generally safe.

Datem is generally well-tolerated and has a good safety history in both food and cosmetic use. It is unlikely to cause irritation, though those with known sensitivities to emulsifiers should patch-test new products first.