I’m using a deluxe sample right now and I apply it after cleaning at night followed by the SR Luna oil. I’ve been using it for 2 weeks now and I’m honestly not that impressed. I saw bigger improvements when I started using the Luna oil last year. So I’d recommend that instead lol. I buy the half size and it lasts a long time. I’ve also seen reviews stating that Good Genes has been reformulated and it’s not the same so that could be the issue. My sample is pretty new.