Which should I put first?

Skin 1004 Centella Ampoule or The Ordinary Niacinamide? I think both have the same consistencies. I think I should put the ampoule first(?) but wouldnt applying TO after make it too dewy? I also put Epiduo Forte after. I was thinking should I put the ampoule then epiduo then niacinamide? Or sandwhich them like what other influencers say since the epiduo forte might not penetrate into the skin if I put lots of product before it. Please help answer below: A. Skin 1004 Centella Ampoule > The Ordinary Niacinamide > Epiduo Forte B. Skin 1004 Centella Ampoule > Epiduo Forte > The Ordinary Niacinamide C. The Ordinary Niacinamide > Skin 1004 Centella Ampoule > Epiduo Forte D. The Ordinary Niacinamide > Epiduo Forte > Skin 1004 Centella Ampoule