Peptides are short chains of amino acids that signal skin cells to build more collagen. They're gentle and well-tolerated — but the evidence behind them is far weaker than the marketing suggests.
Dermal fillers are gel-like substances injected under the skin to smooth lines, restore lost volume, and shape features. Most use hyaluronic acid, a sugar the body makes naturally.
Microneedling uses fine needles to create controlled micro-injuries in the skin, triggering it to build new collagen. It uses no heat, which makes it one of the safest options for all skin tones.