PCA Skin Pro-Max Age Renewal Serum 1oz (29ml) – EXP 02/2025 – NEW & SEALED! ✔Size: 1.0 fl oz / 29ml. Unlike conventional growth factors that sit on the surface,PCA Skin’s patent-pending Micro Growth Factor Technology (MGF) penetrates deeper into the skin tosupport collagen renewal forfaster, longer-lasting results.