HP Cell Regation Skin Booster Serum II is a more potent booster from BR Pharm, containing 1.0% PDRN in a 3 mL vial × 5 per box. Designed for deeper skin rejuvenation, it delivers stronger stimulation of extracellular matrix regeneration, collagen and elastin synthesis, and improved skin texture. With higher PDRN content, Serum II is suitable for more mature skin, pronounced signs of aging, or in combination with invasive aesthetic procedures.