Neogen Dermalogy brand. Probiotics Double Action Serum. BRAND NEW IN BOX. Full size: .22g/.77oz each side. Retails: $42. Authentic. I frequently and personally purchase beauty items; I am not affiliated with the brand. Please note the EXPIRATION DATE 6/22/2028. Check back often or look at what is listed, as we have a large collection of beauty, fragrance and clothing items available, including more Neogen Dermalogy beauty products. Please look at all picture, read the description and ask all, if any, questions prior to placing a bid - thanks for understanding :)