While there was also an initial drop in Sutterella, this result was no longer significant after adjusting for age, body mass index (BMI), and gender
An alternative possibility is that humans have capacity for the same level of skill as in faces, but we see low odour identification rates because, again, we tend to test in ODD populations where people do not have sufficient opportunity to learn or maintain skills in olfactory perception (Roberts et al., Reference Roberts, Havlek and Schaal2020a)
Like any serum, you should use these after putting on toner
AOD9604 seems to do this by boosting the production of the components needed for cartilage, notably proteoglycans and collagen
Ask a professional of skincare to guide you on what works best for you