Do you put sunscreen or primer first?

I'm curious, when it comes to your skincare routine, do you prioritize applying sunscreen or primer first? I understand that both play crucial roles in protecting and enhancing the appearance of your skin, but I'm wondering if there's a specific order that's recommended for optimal results. Could you elaborate on your thoughts on this matter, and perhaps share any insights or experiences you may have had in regards to the sequence of applying these two products?