No prostaglandins
They are the reason competing serums can promise three weeks. They are also the reason those serums carry warnings about eye colour. Peptides are slower and do not.
Most lash serums that work in three weeks work because of prostaglandin analogues. Those are also what the reports of iris darkening and eyelid pigmentation are about. We left them out and built everything else around that one decision.

A short catalogue is a series of refusals. These are ours.
They are the reason competing serums can promise three weeks. They are also the reason those serums carry warnings about eye colour. Peptides are slower and do not.
Lashes grow on a cycle you cannot rush. We would rather say that than sell a bottle you abandon in week four.
There is no primer, no sealer, no overnight mask. One stroke a night is the entire routine, and a bigger catalogue would only be a worse version of that sentence.

Not because it is not working, but because nothing is visible yet. Here is what is actually happening.
Conditioning only. Lashes feel softer and less brittle. You are feeding the next cycle, not the one you can see.
New growth reaches past the old curl. This is the first change most people notice in the mirror.
Gaps along the lash line close as more follicles enter the growth phase together.
Three to four nights a week holds it. One bottle still covers a full cycle at that cadence.
A serum that needs a primer and a sealer is a serum that does not work on its own. We tested the routine down to a single stroke because every extra step is a step someone skips on a Tuesday — and consistency, not concentration, is what changes a lash line.
If we ever add a second product, it will be because a customer asked the same question often enough that silence became the wrong answer.
[Decide before publishing: signed by the team, or by a named person?]
Use the bottle. If it is not for you, send it back within 60 days for a full refund.