The one skincare category that I believe is worth the splurge is serums. I'm happy to use budget cleansers and moisturisers because serums are the products that do the most work and although there are great budget serums on the market (particularly in recent years), as I am getting older, I find that I need products that will actually live up their claims and it just so happens that the ones I love most are quite pricey. In order to justify a repurchase, I need to have seen a visible difference in my skin while using the product and one such product is Oskia Midnight Elixir. I have repurchased this three times!