[Crossref] Farris P, Krutmann J, Li YH, McDaniel D, Krol Y (2013) Resveratrol: a unique antioxidant offering a multi-mechanistic approach for treating aging skin
[6] If this happens, vitamin B 12 deficiency may result in sense loss, loss of sensation in the feet, difficulty walking, poor balance, blurred vision, changes in reflexes, muscle weakness, decreased smell and taste, decreased level of consciousness, mood changes, memory loss, depression, irritability, clumsiness, disorientation, dementia and, in severe cases, psychosis
However, their products may still contain ingredients such as essential oils that are considered a fragrance by INCI standards
(4) Smith RL, Soeters MR, Wst RCI, Houtkooper RH
Most likely, yes
Why did the lower dose work better than the higher dose