The ability to recognize human faces is impaired in older adults (OAs) compared with younger adults (YAs). The former age group’s diminished capacity to integrate new facial information could be one reason for this impairment. The face adaptation paradigm is one efficient tool to investigate this information integration ability and the plasticity of our perceptual and memory system. Adaptation effects have been observed for many dimensions of faces. In a recent study, we induced face adaptation effects for non-configural brightness information in OAs and YAs. Results indicated that these adaptation effects occur similarly across age groups, demonstrating that adaptation effects for facial brightness information are age-independent. However, this prior research is limited to only one type of information, determining the conclusions about age-related face adaptation effects and face recognition differences. Therefore, the present online-study for the first time investigated possible age effects in face adaptation for facial contrast. We show that exposure to an image of a familiar face with strongly manipulated facial contrast (increased or decreased) alters the perception of subsequent face stimuli: original face images appear then to be manipulated, while images similar to the adaptor are perceived as non-manipulated originals. However, just as for brightness, we were unable to find differences in the adaptation effect between OAs and YAs for facial contrast. We discuss the results in the context of age-related difficulties in face recognition.