I was pleased to get my hands on this in the sale for a very irresistible price, and no regrets - the set comes with a full range of serums that you can use in different ways for a range of skin concerns - use them individually on the skin, or add several drops to boost up other facial serums, creams and oils to suit your needs. The possibilities are endless! I will now be able to tailor my skincare routine based on the season and where I'm at in my cycle.