For the last several years I've used a skincare product called copper peptide. While there are a lot of people who say the product works for them, there are also many who say it causes something called the "uglies"-- a loss of skin tone, wrinkling, sagging and open pores. Most people say it's from over use of the product (CP can trigger something called MMPs which remove collagen from the skin), but there are reports of people having bad reactions to both the 1st generation ghk-cu and 2nd generation products (which are said to be a different product altogether), in any amount or length of use.
I currently have the uglies, probably as a result of overusage, but am wondering if this diet has changed my metabolism in some way that copper will no longer work for me. That doesn't make much sense since I don't eat a lot of copper rich foods. (I'm not an oyster fan)
Also, I've read zinc sunscreen could be a cause, but that also doesn't make sense. How could zinc trigger skin breakdown? The idea is that if you use copper with zinc the zinc ions negate the copper and can make your pores larger. Does anyone have larger pores as the result of just using zinc? If copper is necessary for collagen building, wouldn't using zinc interfere with for most people who are probably copper deficient?