Copper peptide serum.

"The Theoid copper peptide serum is wonderful. If you have acne prone skin, go with the Theoid. If you're on a budget, I think the Theoid ends up being a little bit more affordable and it lasts a little bit longer and the bottle is pretty big, this 1.7 oz. This stuff is pretty thick, it has a kind of an almost an ointment like texture to it which I love for my dry skin, but it has broken me out a handful of times even when my skin isn't blemish prone, so keep that in mind. Copper peptides are wonderful for anti-aging, just be cautious how you use them. You don't want to use them with a lot of actives, especially ones that have a low pH, because it can break up the peptide bond. So you don't want to use it with retinoic acid or certain exfoliants, lactic acid, things like that. Or if you do, be sure to use a neutralized product in between them so that the copper peptides can do their job without being disturbed by the low pH of actives."

"The best peptide serum for sensitive skin is hands down the Theoid Copper Peptide Serum. It's encapsulated so it's definitely sensitive skin friendly. It's also really easy to slot in your skincare routine because with things being encapsulated it means you can use it alongside any of your other actives with no problems whatsoever. It's actually a nice creamy consistency so it applies beautifully to the skin. Sky high concentration of those copper peptides, this packs an anti-aging punch and if you've got sensitive skin this could be your best friend. It's a great all-rounder for anyone out there no matter what your level of skin sensitivity."