Tartaric Acid

A less used AHA. It is mostly used as a pH adjusting ingredient and its effects on the skin are yet to be researched. Its derivatives are used in a similar manner to barrier-repairing ceramides.
Functions
Origin
Tartaric Acid

Overview

Tartaric acid is an organic acid from the group of alpha-hydroxy acids (AHAs). It is naturally found in fruits, especially grapes, and is one of the main acids in wine. It is one of the lesser-used AHAs in skincare and mostly used as a pH adjuster or otherwise technological ingredient.

There is one study that describes the use of tartaric acid in the formation of ceramide analogues called tartramides, which are supposedly able to provide the same barrier-repairing effects as skin-identical ceramides.

An important distinction to make is that tartramides are previously synthesized in the lab before application, and applying tartaric acid to the skin will not provide the same effect.

Science

1
Sinkó, B., et al. (2010). Synthesis and characterization of long-chain tartaric acid diamides as novel ceramide-like compounds. Molecules (Basel, Switzerland), 15(2), 824–833.