Does anyone remember a product called W5.

Never heard of it.

When i was in my thirties, i had a really deep premature wrinkle, from sleeping on my face i think, right across my cheek. I took these tablets (a three month course) they were called W5. They showed diagram of skin before and after, and it was DNA/RNA i think that built the tissue layer up.

It actually worked. It completely got rid of this deep wrinkle. I have never seen this product again, and just wondered if it was forced off the market, by manufacturers of face creams etc.

RNA/DNA is used in some creams for firming up the skin.

It worked from within, so i was wondering if silica would have similiar results,
i know it helps build collagen/Elastin and is good for wrinkles, but would it have dramatic results like that.

Silica, along with vitamin C and sulfur work very well in strengthening the tissues including the skin. Wrinkles form from the loss of elastin in the skin, which causes the skin to stretch and sag forming wrinkles.

Can we get that DNA/RNA acids naturally?

Eating meats and plants. They also sell supplements of RNA/DNA. Back in high school one of our science projects was extracting DNA from some meat. It was really simple to do. Grind it up in some water and centrifuge it to separate the DNA.