Caffeic acid (CA) ia classified as a hydroxycinnamic acid having three acidity constants and low stability in aqueous medium. This work proposes the use of sodium dodecyl sulfate (SDS) surfactant to confer stability to CA, performing the electrochemical characterization of the H₃CA species at pH 1.44 in aqueous media, in the presence and absence of SDS. This study was carried out by cyclic voltammetry (CV) recorded over a carbon paste electrode (CPE) vs Ag/AgCl, beginning the potential sweep at E_i=0 = 0.400 V in the anodic direction. In the absence of SDS, the CA presents an oxidation peak at 0.527 V, but when the potential sweep is switched it is possible to observe a cathodic peak at 0.498 V; this study shows that the CA oxidation process is controlled by diffusion according with the Randles-Sevcik equation. However, in the presence of SDS the CV presents an oxidation peak at 0.561 V, although when switching potential sweep it is possible to observe a cathodic peak at 0.546 V. There exists a 0.029 V potential difference betwen the anodic and cathodic peak in the absence of SDS, while in its presense the potential difference is smaller, namely, 0.015 V. The CA anodic peak, in the presence of SDS, increases to 18.1 mA. The study shows that in the presence of SDS the CA oxidation is controlled through adsorption.