The current study design centered on the principle that judging attractiveness and age involve two distinct perceptual processing methods: attractiveness is regarded as an emotional process while judgments of age are believed to be cognitive, or rationally-based.

This suggests that olfactory and visual cues independently influence judgments of facial attractiveness.

With regard to the cognitive task of age evaluation, visual age cues (more wrinkles and blemishes) were linked to older age perception.

However, odor pleasantness had a mixed effect.

Visual age cues strongly influenced age perception during pleasant odor stimulation, making older faces look older and younger faces look younger.

This effect was weakened in the presence of unpleasant odors, so that younger and older faces were perceived to be more similar in age.

Jean-Marc Dessirier, Lead Scientist at Unilever and a co-author on the study said, 'These findings have fascinating implications in terms of how pleasant smells may help enhance natural appearance within social settings.

'The next step will be to see if the findings extend to evaluation of male facial attractiveness.'

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