Your skincare shelf probably already has a serum or two. Maybe a vitamin C for glow, maybe a hyaluronic acid for that dewy, just-left-the-facialist look. But the serum world just got a major glow-up. The newest bottles aren’t just masking the damage. They’re claiming to actually repair it, and not just on your face. Now your scalp and even your tooth enamel are getting the repair treatment too. Exosomes, growth factors, salmon DNA and mineral-packed tooth treatments are the buzzy bio-repair ingredients all over your feed, and they usually come with a price tag to match. So...