YCODE

Most serums stop working before lunch.

They put water into the skin and leave it there undefended. It evaporates through the morning, the tightness returns, and by early afternoon you are back where you started with an empty bottle to show for it.

The Hydrating Face Serum was built for the second half of the day, not the first ten minutes of it.

Water goes in and stays in. Glycerin and saccharide isomerate draw it into the skin. Sodium hyaluronate holds it. Niacinamide supports ceramide production so the barrier keeps hold of it rather than leaking it through the day.

It adjusts rather than repeats. Chlorella vulgaris reads the skin it lands on and synthesises what that skin needs, which is not the same thing on a cold morning as it is after a short night.

Texture smooths, tone evens. Consequences of a barrier that stays supported instead of being repeatedly compromised.

Nothing sits on top. No heavy emollients, no thickeners, no fragrance. It absorbs in seconds and leaves nothing behind.

One pump, morning and evening, face and neck.

Hydration you can still feel at four in the afternoon.

This is M+ on the skin it was calibrated for.

Deeper skin holds more melanin, so under-eye pigmentation reads differently and a light-reflecting complex tuned for anything lighter turns grey on it. M+ is corrected for that, with added hydration for an area that runs drier at this end of the range. Applied and left, tapped along the orbital bone, no blending required.

M covers most skin tones and is where you land if you are unsure. M− was calibrated for the lightest end. Between all three sits a wide band of crossover, because the finish was built to sit below the threshold of visibility rather than to sit on top of the skin.

The formula underneath does not change. Fucus vesiculosus and Lithothamnion calcareum work beneath the surface. CO₂-extracted wild ginger brings down puffiness. Pro-Vitamin B5 holds moisture where the skin is too thin to hold much on its own. Identical actives in every tube. Only the finish is tuned.

86% said they looked less tired at fifteen minutes, 94% by fifteen days. Dark circles visibly reduced for 73% at fifteen minutes, 90% at fifteen days. 111 men, independently assessed, against a placebo that showed no significant difference.

Three formulas, not three shades.

Get the Advanced Eye Serum at ycode.co

The Advanced Routine. Three boxes, three sizes, one reason for each.

7.5ml for the Advanced Eye Serum. 25ml for the Hydrating Face Serum. 50ml for the Mattifying Moisturiser. The sizes are not a hierarchy of importance. They are dose multiplied by area — a bead under each eye, one pump across face and neck, a pea-sized amount spread from five points. Each format holds the same number of mornings.

The exteriors are deliberately quiet. No claims across the front, no gradients, no attempt to look like technology. What is embossed instead is a sequence, the blind-stamped marks running up each box are code, raised rather than printed, visible only when light crosses them at an angle.

Beside them, a line drawing of the microalgae itself, and on the side panel the key actions in three lines. Everything else is on the back, where it belongs.

Inside, the packaging keeps working. Amber glass for the face serum, because light degrades actives and a clear bottle would undo the formulation. Tubes for the other two, so nothing is exposed to air twice.

Design that does not announce itself, protecting formulas that do not need it to.