Guides / Formulation Diagnostics Hub
Formulation diagnostics: start with the problem, not another ingredient page
Scale 1 on MO-LAB already covers how to place a named active or system — Argireline in an eye serum, ectoin in a barrier fluid, a preservative in a water-rich chassis. Those pages answer “how do I use this material?” Scale 2 answers a different search: “which of two tools belongs here?” and “why did this batch fail after it looked fine in the beaker?” This hub is the cluster map. It does not invent use levels, pH windows, or potency percentages. Supplier TDS and COA remain the source for lot-specific numbers. What you get here is a diagnostic order of operations and links into the first published intents.
Why this cluster exists
Formulators rarely type an INCI into a search bar when a gel has already thinned or a serum pills under foundation. They type the failure. Comparison queries are equally practical: two water-phase comfort actives look interchangeable on a brochure, and bakuchiol and a retinoid both get sold as “night actives,” yet they stress a chassis in opposite ways. This hub maps peptide comparisons, pilling and viscosity trees, ectoin versus beta-glucan, bakuchiol versus retinol process, emulsion separation, challenge-test versus preservative selection, carbomer salt shock, fragrance traces in water, chelator choice, and humectant-blend design so the pages are never orphans.
How to use the hub
Pick the row that matches the question you actually have. If you are choosing between two expression-line peptides, open the Argireline versus SNAP-8 comparison — not the single-ingredient Argireline placement guide. If you are choosing between a palmitoyl matrix peptide and GHK-Cu, open that comparison instead of stacking both “because marketing.” If a finished serum forms crumbs on the skin, start with the pilling diagnostic before you swap the lead active. If a gel looked elegant until the active phase went in, start with the viscosity tree. Cross-read the Scale 1 placement guides only after the decision or diagnosis is framed.
| Question you typed | Open this guide | Do not confuse with |
|---|---|---|
| Argireline or SNAP-8 in this serum? | Argireline vs SNAP-8 | Argireline placement guide (single INCI) |
| Matrixyl-type peptide or GHK-Cu? | Matrixyl vs GHK-Cu | The two separate peptide primers |
| Why does this serum pill? | Why a serum pills | HA molecular-weight selection |
| Why did the gel thin after actives? | Why a gel loses viscosity | How to choose a serum thickener |
| Ectoin or beta-glucan in this serum? | Ectoin vs beta-glucan | Ectoin barrier-serum placement |
| Bakuchiol or retinol process? | Bakuchiol vs retinol formulation | Bakuchiol-only how-to |
| Why did this emulsion separate? | Why an emulsion separates | How to choose a face-cream emulsifier |
| We bought a preservative — still need a challenge? | Challenge test vs preservative selection | How to pick a serum or cream system |
| Carbomer gel died when the peptide liquid went in? | Carbomer electrolyte thinning | The general viscosity tree / thickener shopping list |
| How do I keep a scent trace clear in a toner? | Solubilize fragrance in water | Solubilizer versus emulsifier as roles |
| EDTA or sodium phytate in this water? | EDTA vs sodium phytate | GHK-Cu placement (chelator mention only) |
| How should glycerin / propanediol / betaine share one gel? | Humectant blend | HA molecular-weight selection |
A shared diagnostic order
Every page in this cluster uses the same discipline. Write down when the problem appeared: in the water phase, after a commercial peptide concentrate, after pH correction, after fragrance, after a night on the bench, or only on skin under makeup. Change one variable. Keep a retained control. Read the carrier on the peptide raw materials you actually purchased, not the trade name on the brief. If rheology moved, treat gel-forming polymers as suspects before you blame the headline INCI. If the formula is water-rich, the preservation system is part of the chassis, not a sticker added at fill. Lot-specific temperatures, percentages, and challenge criteria come from the supplier file — not from this hub.
- Timestamp the first visual or viscosity change.
- Separate the base without the new raw material from the full formula.
- Read INCI, solvent, salts, and storage on the COA/TDS for that lot.
- Record pH and appearance after each high-impact addition.
- Do not invent a use level to “match a blog.” Ask the supplier.
What is already live versus what is next
The cluster now publishes the validated Scale 2 set: peptide and barrier comparisons, pilling and viscosity trees, emulsion separation, challenge-test discipline, carbomer salt shock, fragrance traces in water, chelator choice, and humectant-blend design. Each guide is independently written in English, Ukrainian, and Russian: same subject, different search angle and examples. If you arrived from the peptide serum stability article, use this hub to step sideways into comparison or failure trees instead of rereading the same cloudiness story.
Where commercial documentation sits
When a comparison mentions a concentrate or a polymer family, follow the in-body Mylo Opt references for catalog context, then verify the lot you will actually weigh. A storefront category is not a formula. A peptide-preservation technical note is not a substitute for challenge testing the finished bulk. Use the Ingredient Finder when you need to scan INCI families, then return here when the problem is a choice or a failure rather than a catalog browse.
The full Scale 2 map now live
The cluster is no longer a four-page preview. From this hub you can move into expression-line peptide choice, matrix-versus-copper conflict, barrier water-phase comparison, bakuchiol-versus-retinoid process, pilling, general viscosity collapse, carbomer salt shock, delayed emulsion separation, fragrance traces in water, chelator choice, humectant blending, and the split between picking a preservative and proving it. If two pages seem close, use the “do not confuse with” column: selection guides tell you how to place a material you already chose; these pages tell you which question you are actually asking. Bookmark the hub when a brief arrives as a complaint rather than as an INCI list.