• Product Features– With its firming properties, this serum takes excellent care of loose and weakened skin– Packed with a variety of vitamins and nutrients derived from blueberries, this serum elevates the skin’s overall condition– A pH 4.0 mildly acidic product that protects the skin from external harmful environments and balances skin care.– Contains 2% niacinamide, providing vitality to dull skin– Environmentally friendly packaging with a focus on nature (Container – PCR container / Outer box – Made from soy ink).