Peptides have long been a fixture in skincare. They signal cells to produce more collagen and repair visible damage. Their role in hair care is relatively new to the market, but the principle is similar: peptides act as messengers, supporting scalp and follicle health so hair can grow in a stronger, more resilient environment. Instead of being positioned as a cure for thinning, peptide serums for hair are marketed as daily scalp care. Think of them the way you might think of moisturizers or antioxidants for the skin; peptides do not replace proven medical treatments like minoxidil or finasteride, but they can improve the scalp’s condition and may help slow shedding. Here, peptides aren’t about miracle growth. They are about protection, support, and extending the longevity of what you already have. How Peptides Work Peptides are short chains of amino acids, which are the building blocks of protein. In skincare,..