Dimethyl Isosorbide From The Formulation Knows A Long-Lasting Use In Medicine And Cosmetics For The Purpose Of Maximizing The Effects Of Certain Products, Due To Its Increased Capability Of Deep Penetration Of The Skin And Utter Absence Of Toxicity. Use:  The Vials May Be Used 3-4 Times Per Week On The Clean Complexion, Alone Or In Association With Other Complementary Maintenance Products. It Is Not Necessary To Use The Product In Association With Other Products Containing Vitamin A Or Other Retinoids. During The Period Of Treatment With Retinol, Avoid Exposure To Ultraviolet Rays. During The Sunny Seasons, Use Along With A Screen Cream, With An Average Or High Protection Factor. To Protect Hands, Wrap The Ampoule In A Napkin Before Opening It. Avoid Contact With The Eyes!  For External Use Only! Action: Anti-Wrinkle, Face Care, Lift, Special Care Skin Type: All Skin Types Age: 30+, 35+, 45+, 55+