Our 2 oz tub can last for about 1 month. KHONSU RESKIN is used to give your skin a youthful appearance. Makes your skin look younger The SOD+ based cream is based on NASA research and thE benefits of SOD can be read here.: https://pubmed.ncbi.nlm.nih.gov/23488583/ https://pubmed.ncbi.nlm.nih.gov/33057147/ https://www.liebertpub.com/doi/10.1089/ars.2011.3999 https://www.sciencedirect.com/science/article/abs/pii/S0304394005004477 https://www.sciencedirect.com/science/article/pii/S0065242314000109 Delivery 1-2 working days