The case for slowness
Skincare results compound on a 90-day scale. Most of what feels like "this is working" in the first week is the vehicle, not the active.
The first week of any new serum is a stranger telling you about itself. Stinging is the preservative system. Plumping is occlusion. Glow is angle and oil. The active inside might be doing its job — or might not be — but you won't know for at least six weeks, and won't know with confidence for ninety days.
Why ninety days
A skin cell takes 28–40 days to turn over. A peptide-driven change in collagen synthesis won't show until at least one full turnover. Pigment correction is slower — the melanin already in the basal layer has to migrate up and slough off, which is two or three cycles for most people. If you want to evaluate a serum, the lower bound is three months, not two weeks.
What we ask of you
A Sequence12 formula ships with a 90-day journal. You photograph the same lighting, same time of day, weekly. We reformulate at day 90 based on what's working and what isn't — your retinoid, your barrier, your seasons. The cycle is the product. The bottle is just where it lives.