Swiss Pristine Serum

This skincare product is Swiss Pristine Serum by La Prairie. Order matters in a routine: thinner, water-based textures go on before richer creams and oils, or the layers underneath never land. Patch test on the inner arm or along the jaw first, especially if you are already using retinoids, acids or vitamin C. Where one is discounted, compare the size and edition rather than the headline alone. Follow with SPF in the morning: plenty of active ingredients leave skin more sensitive to sunlight than usual. Whoever is cheapest today may not be tomorrow, so it is worth looking again before settling on the best deal.