After using tretinoin for over a year at .05% strength I decided it was time to move up to the strongest strength. I did have some issues when I started with tretinoin and you can read about my journey here, here, here, here, here, and here. If you want some basic information on tretinoin you can find it here and here. I learned from… Continue reading Tretinoin – Going from .05% to .1% Strength