So sorry for the delay in responding to your post;I didn't realize that there had been an update to my thread.
Zinc is vitally important for the overall health of your skin and promotes collagen development. Here are a couple of links:
"Zinc – vital for skin, hair and nails
Zinc accelerates the renewal of the skin cells. Zinc creams are used for babies to soothe diaper rash and to heal cuts and wounds. Zinc has also proven effective in treating acne, a problem that affects especially adolescents, and zinc has been reported to have a positive effect on psoriasis and neurodermitis.
Zinc is also used as an anti-inflammatory agent and can help sooth the skin tissue, particularly in cases of poison ivy, sunburn, blisters and certain gum diseases."
" Having sufficient vitamin D in the skin helps minimize acne, boost elasticity, stimulate collagen production, enhance radiance, and lessen lines and the appearance of dark spots, he says. It’s this laundry list, plus anecdotal evidence from seeing patients day in and day out at his NYC office, that led him to create skincare with D right in the bottle. “Many of my patients have vitamin D deficiencies as a result of avoiding the sun and wearing a daily sunscreen in fear of premature aging and cancer,” he says. “Together, we noticed that their skin had a sallow and dull appearance, which I believed to be an adverse effect from low levels of vitamin D.”