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Quality control

A specification is a claim. A batch record is the evidence.

If every batch is not measured against the same parameters, a specification is a marketing document rather than a control. Release criteria exist to be enforced, including when enforcing them means rejecting a batch.

In-process controls

Dispersion is measured after milling — not assumed from the procedure. Particle size distribution and visual film assessment are the two checks that catch the failures which only show up later in stability. pH, temperature and viscosity are recorded at defined points through the process rather than only at the end.

The point of in-process control is that a deviation is caught while there is still something to do about it. Finished-product testing alone tells you what went wrong after the batch is already lost.

Finished product release

Appearance, odour, pH, viscosity, and homogeneity across the batch. Where the formula includes a UV filter system, dispersion state in the finished emulsion is verified — an emulsion can be visually uniform while the filter distribution is not.

Microbiological testing is performed per the preservative system and the product's water activity. Preservative efficacy testing is carried out on the developed formula, not inferred from the preservative supplier's data.

What we do not claim

We hold no certificates in our own name at this stage and this site displays none. Where a project requires certification of the manufacturing facility, that is a question we address per project with the actual production partner — including being honest when a requirement cannot be met.

Detailed test methods, acceptance criteria and batch documentation are shared with brand partners under NDA.