Regulatory Approval: While many skin-focused glutathione products operate in a grey area regarding specific regulatory approval for aesthetic use in various countries, checking if the manufacturing facility is approved by relevant health authorities (like FDA in the US, though these are often manufactured elsewhere) adds a layer of confidence regarding safety standards for pharmaceuticals
In medicine, trehalose and hyaluronic acid are used to help treat dry eyes
, 48 , 303-307, doi: Dequanter, D., Van De Velde, M., Bar, I., Nuyens, V., Rousseau, A., Nagy, N., Vanhamme, L., Vanhaeverbeek, M., Brohe, D., Delre, P., Boudjeltia, K., Lothaire, P., and Uzureau, P
Keep Dihexa in a cool, dry place away from direct sunlight
PMID 18044098
Vitamin C can help lighten melasma but usually works slower and less predictably than tranexamic acid for deep or hormonal melasma