GHK-Cu (Copper Peptide) Neck & Face Serum 1,200mcg (1 oz bottle) by Neurogan

Reviewing: Neurogan+Health CHK-CU Copper Peptide serumI read a couple books on the newer peptides, including skin topical peptides like Matrixyl and GHK-CU, so decided to give them a try. I'm giving 5-stars, but I haven't used GHK-CU or any of them by themselves. I followed advice and mixed them with a "carrier", in my case I had Cosmesis Advanced Triple Peptide serum, so I mixed all three together in roughly equal parts. I doubt the brand matters but be sure to know the ingredients sufficient enough to be effective (peptides are smaller part ingredients). In my case I bought at Amazon 'Skin Perfection' Matrixyl 3000 (matrikin), 'Neurogan+Health' GHK-CU (copper peptide), and 'Cosmesis' Advanced Triple Peptide Serum.From the first application overnight -- I saw a very clear improvement in my skin the next morning. You have to cycle peptides, so I only use it every other week. My skin has never, ever looked so good (I'm in my 50s with naturally good skin, but with aging, I needed a makeover. After a couple weeks, I started micro-needling it in while still half most. That's when my waitin' was over, rocking results. It's been about two months, skin looks fab. P.S. keep peptide products in refrigerator upon delivery, otherwise, they lose their effectiveness. I'm posting this same review for Matrixyl3000 product.disclosures: I have no financial interest in any of these skin products or any peptide products; this review is strictly my personal experience that I thought others would want to know about. Do your own homework, this review is not medical advice of any kind nor am I a medical doctor.

Nice product, goes on smooth and absorbs quickly. Only been using it a couple months but starting to see a difference.

After 3 successful experiences with this product, the 4th arrived and I immediately noticed a change in the smell and the color (yellowish to green). Nevertheless, I went ahead and tried using it. Unfortunately, my skin started to flake/peel and places on my cheeks and forehead became red, the skin in those areas became thin and these areas burned. I stopped using it and cancelled my subscription. I would like a refund.

The formula and packaging has changed. It's ok but if you had the original formula you can notice the change. It worked but not like the other formula. Would I still purchase it again? Perhaps, after trying something else.

Perfect

I would buy it again

As I worded it in the headline. Copper peptide will give it a blue tint even at smaller concentrations. I like the serum but would like this explained.

Products change! This product used to be clear and was wonderful - at $20, half the price they now charge. But now it is dark grey and shimmery in color and makes me break out badly at double the price. Why did they change the formula? I don’t know what changed because they did not update the ingredients list. The colorant and shimmer are both unknown ingredients. Which is illegal labeling.