Core Four Serums

Correct for retinaldehyde-driven renewal, Catalyst for Vitamin C and tone, Rescue for barrier support, and StemFactor for overall skin quality through exosome technology. Four formulas covering four different jobs, which is why they are grouped rather than sold as alternatives.

Two is a sensible start: Rescue with either Catalyst or Correct, depending on whether tone or firmness matters more to you. Add the others as skin settles. The four exist to cover every angle, not because a routine fails without all of them.

Morning: Rescue then Catalyst. Night: Rescue then Correct, with StemFactor on nights you skip the retinal. Thinnest first each time, letting each absorb for a moment. Splitting them across the day keeps the actives from competing with one another.

Because the formulas were developed under medical direction with patented ingredient technology behind them, rather than assembled from familiar actives. Each of the four holds or has held a category award from aesthetician bodies, which is the practical evidence.