Visit http://www.dryusra.com to find out more!Chapters:00:00 Introduction00:37 Understanding Retinoids: Retinol, Retinoic Acid, and More02:33 The Science Behind Retinoids and Skin Absorption04:58 Retinoids and Aging: Collagen, Elastin, and More06:54 Retinoids: Myths, Facts, and Clinical Evidence11:03 Practical Advice: Using Retinoids Safely and Effectively18:20 The Importance of Proper Dosage and Delivery Systems20:23 Building Tolerance and Application Techniques22:04 Determining the Right Ag...