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Five connected translucent pale-beige forms on the left beside a round pale-orange liquid droplet on an off-white background.

Can You Use Peptides and Vitamin C Together?

Five connected translucent pale-beige forms on the left beside a round pale-orange liquid droplet on an off-white background.
Skincare Guides

Can You Use Peptides and Vitamin C Together?

Whether peptides and vitamin C work together depends on which peptide and which form of vitamin C you have. Copper peptides need a closer look. Here's how to check your products.

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Pale golden oil fading to clear on a warm white surface, representing oil-soluble vitamin C.
Skin Science

Oil-Soluble Vitamin C (THD) vs. L-Ascorbic Acid: Stability, Delivery, and Evidence

Vitamin C's reactivity is what makes it useful and what makes it hard to keep stable. Compare L-ascorbic acid and oil-soluble THD ascorbate on stability, delivery and results.

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