Retin-A Benefits I have been using Retin-A for the last 5 years. I started out slow with 0.05% Tretinoin cream for adult acne and lines, wrinkles. I had sun damage and I was going through surgical menopause after a total hysterectomy. In the beginning, I had some learning curves as far as how much to apply, how often and when to apply. My approach was to apply more for better results. That does[...]