Peptide serums primarily stimulate collagen production, leading to firmer, smoother skin and a reduction in the appearance of wrinkles. They act as messengers, signaling skin cells to repair and rejuvenate, ultimately improving skin texture and elasticity.

The 'best' peptide serum depends on individual skin concerns and budget. Look for serums containing a blend of different peptides, hydrating ingredients like hyaluronic acid, and consider serums from reputable brands with positive reviews regarding efficacy and minimal irritation.

Avoid using peptides in the same routine as strong exfoliating acids like AHAs/BHAs, as acids can break down the peptide bonds, rendering them ineffective. Combining with copper peptides specifically is generally discouraged due to potential for irritation.

Vitamin C serum and peptide serum serve different functions. Vitamin C is an antioxidant that brightens skin and protects against free radicals, while peptide serum stimulates collagen production for anti-aging. Both can be beneficial and incorporated into a skincare routine at different times of day.