[Leo_Opolain]

A very useful reply. I’m glad I dropped by here. Thank you all for the answers.   

vitalys said:

@Perry Re: “The long term use of the preparations with high Glycerin content leads to even more severe symptoms of xerosis and related inflammation, especially if Glycerin is the only humectant in the formulation.”  - We all know Glycerol is a well studied substance, however, there are many effects of it deserve additional studies and many of the effects are still unknown. I can only share the results we (a groups of cosmetic chemists and dermatologists) we got after commercial studies for a company I used to work for. ….