Thank you, I did not know about retinoids. I have added this to my reading queue. It seems that prolonged usage can have undesirable side effects, but proper dosage is effective in treating a variety of skin conditions. In the case of reducing skin wrinkles, I wonder if that is purely cosmetic, or if it actually makes the skin healthier in some way?
That is really interesting. The potential side effects from toxicity listed on wikipedia [1] are ominous. I wish there was consumer technology to effectively monitor ones own blood work.
