Contract Beauty

Private Label Hair Growth Serum: What to Decide First

Written by

Sean Elias

in

Yes, you can private label a hair growth serum — but the decision that matters happens before you contact a factory. A cosmetic manufacturer can make a peptide, caffeine or botanical scalp serum sold on appearance claims (“the look of fuller, denser hair”). It cannot make a minoxidil product, because minoxidil is an FDA-regulated over-the-counter drug. Your active ingredient and, just as much, the words on your label decide whether you are building a cosmetic or an unapproved drug.

This is where most first-time founders go wrong. They write the claim first — “regrows hair” — and then look for a factory that can make it. That phrasing turns the product into a drug in the eyes of the law, and no cosmetics lab in the United States should accept the brief as written. Get the category right first, then choose the supplier.

White label (ready-to-go)
An existing formula from the manufacturer’s catalog, sold under your brand. Lowest cost and shortest lead time because the formulation and stability work are already done. A hair growth serum is only available this way if a suitable ready-to-go formula already exists in that lab’s book.
Private label (custom formulation)
A formula developed to your brief — your chosen actives, your concentration. Higher cost and longer lead time than white label, because it needs development, preservative efficacy testing and pH validation before production.
Contract manufacturing
The broad manufacturing service. Ownership, pricing and lead time depend on the agreed project, so they cannot be ranked in the abstract. As a general ordering, white label sits below private label, which sits below full contract manufacturing on cost, on lead time and on how much control you have over the formula.

For Moe’s Group specifically, white label starts at a 200-unit minimum and custom formulation at 1,000 units. Those are the floors; whether a ready-to-go hair growth serum exists at 200 units depends on the current catalog, which is worth confirming directly rather than assuming.

Chuffy, a small round anxious creature in pencil sketch style, holds up a small product jar with wide-eyed wonder as sparkles come off it.
The exciting part — imagining the finished jar on a shelf — is the easy part. The claim on that jar is what decides everything else.

What makes a hair growth serum a drug instead of a cosmetic?

The line is drawn by intent, and intent is read from your marketing. The FDA’s position is blunt: a product marketed with claims about treating or preventing disease, or affecting the structure or function of the body — including the skin and scalp — is a drug under the law, even if it also affects appearance.

In practice, that means a short list of phrases quietly reclassifies your product:

  • “Restores hair growth” — drug claim.
  • “Stimulates follicles” or “activates the follicle” — drug claim.
  • “Reverses hair loss” / “regrows hair” — drug claim.

What a cosmetic may say stays in the language of appearance and feel: “for the look of fuller, thicker hair,” “supports the appearance of hair density,” “visibly reduces the appearance of shedding,” “helps maintain a healthy-looking scalp.” These are not weasel words — they are the legal boundary of a cosmetic, and crossing them is what gets a warning letter.

Minoxidil is the clearest illustration. It is a regulated over-the-counter drug active with its own FDA monograph, and it can only be made in a facility set up for OTC drug manufacturing under drug GMP. That is a different type of supplier entirely — not a cosmetics lab. Finasteride and spironolactone are prescription drugs and are not contract-manufactured as retail cosmetics at all. If your plan depends on minoxidil, a private-label cosmetics manufacturer is the wrong call from the first phone call.

Chuffy buried up to the chest in a towering, collapsing pile of scribbled papers and folders, eyes wide in panic.
Underneath every active ingredient choice sits a pile of claims-substantiation and stability paperwork. Decide the claim early and the pile gets smaller.

Which active ingredients can a cosmetic hair serum actually use?

Every commercially common scalp active other than minoxidil is a cosmetic ingredient when paired with appearance claims. The honest version of the story is that these actives show real but modest effects, and the evidence varies a lot by ingredient. A dermatologist-run 2026 review of hair growth serums and a formulation breakdown from Global Formulation both land in the same place: useful, not miraculous.

  • Caffeine — water-soluble and robust; a reasonable workhorse. One 2024 trial comparison put caffeine at roughly 7 new hairs/cm² against about 17 for 5% minoxidil over 24 weeks — real, but a fraction of the drug.
  • Redensyl (dihydroquercetin-glucoside + EGCG) — marketed for thinning-looking hair; stable in a standard pH range.
  • Copper peptides (GHK-Cu / AHK-Cu) — pH-sensitive, with a narrow stability window; a widely requested scalp active. Moe’s Group publishes work with these in a scalp serum format.
  • Procapil and Capixyl — peptide-and-botanical blends. Be careful here: their headline percentage figures often come from cultured-follicle or ex-vivo assays, not clinical trials on people. Do not put those numbers on a label as if they were patient outcomes.
  • Rosemary extract — one 2023 head-to-head study found it non-inferior to 2% minoxidil at six months in androgenetic alopecia; worth citing only with that full context, not as a blanket claim.
  • Adenosine, niacinamide, biotin — common supporting actives; biotin’s evidence is strongest in genuine deficiency, so do not overstate it.

The active you pick drives everything downstream: the claims you can legally make, the pH and preservation your formula needs, and whether a stock formula already fits or you need custom development.

Chuffy looking exhausted, tangled up in the long coiled cord of an old telephone receiver held to its head.
Expect to spend real time on the phone matching your active list to a lab that actually formulates it — not every manufacturer makes every peptide.

White label or custom formulation for a hair growth serum?

The choice comes down to whether a formula that uses your actives, at your concentration, already exists.

White label makes sense when a ready-to-go scalp serum in the lab’s catalog is close enough to your brief. Because the formulation and stability testing are finished, it is cheaper and faster to market, and the minimum order is lower — 200 units at Moe’s Group, where a matching stock formula exists. The trade-off is that you are choosing from what is on the shelf, not designing it.

Custom formulation (private label) is the route when you want a specific active system — say a copper-peptide-plus-caffeine serum at a concentration you have specified. It costs more and takes longer, because the formula has to be developed and then validated: at minimum preservative efficacy testing and pH validation before a production run. The minimum order is higher — 1,000 units at Moe’s Group. For a brand-defining product, that control is usually worth it.

If you want to see how one US manufacturer frames hair-specific capability, Moe’s Group’s private label haircare manufacturing page lists scalp serums and leave-on actives and names copper peptides among its most-requested scalp ingredients. Read it as one data point and compare it against others.

Chuffy squinting through a large magnifying glass at a long scroll labeled CONTRACT, looking suspicious of the fine print.
Read the manufacturing agreement as closely as the formula. Who owns the formula, what claims support you get, and what the real minimum is all live in the fine print.

What should you ask a manufacturer — and when are they the wrong fit?

A short, specific list of questions separates a lab that fits from one that will frustrate you:

  • Do you already formulate with my chosen active (caffeine, Redensyl, copper peptides, Procapil/Capixyl), and at what concentration range?
  • Is there a ready-to-go serum that matches my brief, or does this need custom development?
  • What is the real minimum order for each route, and the lead-time difference between a stock fill and a developed formula?
  • Will you review my label claims against cosmetic rules before production?
  • Which fill formats do you run — dropper, pump, applicator nozzle, spray, roll-on? (Spray and roll-on have different filling requirements; confirm rather than assume.)

Just as important is knowing when a cosmetics contract manufacturer like Moe’s Group is simply the wrong tool:

  • You want a minoxidil product. That is OTC drug manufacturing. You need a drug contract manufacturer with drug GMP, not a cosmetics lab — a different category of supplier.
  • You want to test under 200 units. Moe’s hard floor is 200. For a smaller proof of concept, FormuNova lists a stock hair growth serum with peptides at a 140-unit private-label minimum (checked 2026-10-03) — the lowest US entry point found. RainShadow Labs runs a bulk-fill model instead (a 10-gallon minimum on stock formulas, checked 2026-10-03) if you handle your own packaging.
  • You are Asia-first on supply chain. A Guangzhou manufacturer like DESIFINE (GMPC + ISO 22716 + US FDA; a published 3,000-unit minimum and 30–45 day lead time, per their catalog checked 2026-10-03) may suit a China-primary distribution plan better. Verify current terms before committing.
  • You need clinical / cosmeceutical positioning with a medical channel. A lab oriented to advanced delivery systems and clinical claims support — Prime Matter Labs is one US name in that tier — is a better match than a general cosmetics line. Confirm their current offering directly.
  • You are a UK or EU brand. You will need a Responsible Person and a CPSR under EU Regulation 1223/2009. A US facility does not cover that; an EU-based manufacturer does.

Naming the cases where someone else fits better is not a weakness — it is how you end up with a supplier who actually matches the product you are trying to build.

Four copies of Chuffy lined up inside a drawn box like a quality-control inspection row: three hold up finished jars, one in the middle looks disappointed with its jar while the others cheer.
The goal of all this homework: a line that passes inspection — the right category, the right active, the right claims — with only the occasional reject.

FAQ

Can you private label a hair growth serum in the US?

Yes, as a cosmetic — a scalp serum built on caffeine, peptides or botanical actives and sold on appearance claims. You cannot private label a minoxidil product through a cosmetics manufacturer, because minoxidil is an OTC drug that requires a drug-GMP facility.

Why can’t a cosmetics lab make a minoxidil serum?

Minoxidil is a regulated over-the-counter drug active with its own FDA monograph. Making it requires OTC drug manufacturing infrastructure and drug GMP compliance, which is a different type of manufacturer from a cosmetics contract lab.

What claims can I legally make on a cosmetic hair serum?

Appearance and feel claims — “the look of fuller, denser hair,” “supports the appearance of hair density,” “helps maintain a healthy-looking scalp.” Claims that the product restores growth, stimulates follicles or reverses hair loss cross into drug territory.

What is the minimum order for a hair growth serum?

It depends on the route and the manufacturer. Moe’s Group starts at 200 units for a ready-to-go (white label) formula where one exists, and 1,000 units for custom formulation. Some competitors list lower minimums; some list higher. Always confirm the current figure directly.

White label or custom — which is faster?

White label is faster and cheaper because the formulation and stability work are already done. Custom formulation takes longer because it adds development plus preservative efficacy and pH validation before production.

Comparing US contract manufacturers for a scalp serum? If Moe’s Group looks like a fit for your active list and volume, you can start a conversation on their product inquiry page.

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