[dustfinger]

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?

[juvvel]

You can also apply retinoids topically. What it does is increasing collagen production.

[dustfinger]

> What it does is increasing collagen production.

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.

[1]: https://en.wikipedia.org/wiki/Retinoid#Toxicity