I am writing an article about female beauty and perceptions. I wanted to compare two age groups but i cannot find literature review on previous studies measuring perceptions in age groups.
Certainly there is different perception. You may find below article useful.
J Genet Psychol. 2011 Apr-Jun;172(2):162-75 Adult age and gender differences in perceptions of facial attractiveness: beauty is in the eye of the older beholder
Certainly there is different perception. You may find below article useful.
J Genet Psychol. 2011 Apr-Jun;172(2):162-75 Adult age and gender differences in perceptions of facial attractiveness: beauty is in the eye of the older beholder
Try searching on Google Scholar; the article that Dhaval mentions is the very first result that came up when I searched for "age differences in perception of beauty" (i.e., your exact query) there.
Perhaps you could find also helpful an article about historical analysis on studies about visual preferences.
Cagigas, A., Aguilera, J. E. C., Santos, J. M. R., & Vico, F. (2015). Aproximación histórica a los estudios experimentales sobre preferencia visual. Revista de historia de la psicología, 36(4), 43-56.