In my opinion, the best thing for a luminous glow is making sure you’re getting enough sleep, drinking lots of water and eating greens, moisturising and using retinol. SPF is great too but for the first time in my life that I’ve looked at my skin and actually noticed a difference in the beginning and months later is with using Skin Ceuticals ce ferulic serum. A must have for me now and I’ll continue to use it and prompt others too as well.