Probably not much effect. I started right away and ended up with no loose skin after losing 110 pounds.
I have mild loose skin under my chin creating a turkey neck look. The rest of my body is fine after dropping around 75 pounds. I'm 41, six foot three, and currently 250 pounds. Would GHK-Cu injections help with this? Any other suggestions to improve it? The area right under my chin bothers me a lot.