A prebiotic & probiotic-packed dual serum to deliver firmer, stronger, more radiant skin. Known for their innovative formulations, Neogen has created this two-pump, anti-aging serum duo to improve the natural skin barrier function and restore the skin’s pH levels for a hydrated, healthy appearance.The Neogen Probiotics Double Action Serum is formulated with skin-friendly ferments in the form of probiotics and prebiotics, including over 20% lactobacillus ferment lysate, to create an optimal acidic environment for the skin and helping to smooth and plump fine lines and wrinkles. It deeply hydrates with hyaluronic acid and glycerin, while gently exfoliating with lactic acid to provide an overall brighter and bouncier-appearing complexion. This is the white-colored serum on the left side of the bottle.The Pro Barrier Action Serum is more mild and calming, using ceramides and peptides to focus on strengthening the skin barrier, as well as niacinamide to help brighten. This is the ivory-colored serum on the right side of the bottle.Mix these two serums together for optimal results, or create the mixture that works best for your skin by using a little more or less of either serum. We recommend following with the Neogen Probiotics Relief Cream to moisturize.Both serums are formulated without artificial fragrance, colors, parabens, sulfates, mineral oil and silicone.Use:After cleansing and toning, apply the serums mixed together, depending on preference and skin condition. Best to use in both morning and evening. NEOGEN Probiotics Double Action Serum 44 g