It starts with a brief, not a formula
Private label means the product is made to an existing, proven formula and sold under your brand. That makes the first conversation about positioning rather than chemistry: what the product is for, what shelf or room it lives on, what it should cost you landed, and when it has to exist.
The more specific that brief is, the fewer rounds the project takes. Quantity, format, target landed cost and launch date are the four answers that shape everything downstream.
Scent selection or scent development
From here there are two paths. Choosing from a tested in-house scent library is the fast route — the oil is already proven in wax, so there is no development work to schedule. Developing a custom accord to a brief, or matching a reference scent you already sell, adds compounding and evaluation rounds.
Either path ends the same way: a physical sample in the actual vessel, because a fragrance oil smells different in a jar of wax than it does on a blotter.
Vessel, wick and wax are one decision
These three are never chosen independently. Vessel diameter sets the wick size, the wick has to match the wax system, and the wax system changes how the fragrance releases. Change the jar and the wick has to be re-tested.
This is why a stock vessel is faster and cheaper than a custom mold — the pairing is already solved.
Burn testing is the gate nobody should skip
A candle is a safety product. Burn testing checks flame height, melt pool, tunneling, soot, container temperature and how the candle behaves as it burns down, over repeated cycles. This is the stage that turns a nice sample into a shippable product.
It is also the stage most likely to send you back a step: if the melt pool is wrong, the wick changes, and a changed wick means testing again.
Sign-off, then production
Once the scent, the vessel, the wick and the packaging are approved, the spec is locked and the run is scheduled. From that point the same approved spec produces your first hundred units and your ten-thousandth without being rebuilt — which is the entire point of locking it.
Packing and fulfillment
Labeling, cartoning, master-case packing and palletizing all happen at the same address as the pour. Finished goods either ship to your warehouse, to a third-party fulfillment center, or direct to a retail distribution center on the schedule you need.
Where projects actually lose time
Rarely in the pour. Almost always in three places: waiting on sample approvals, long-lead printed packaging, and custom vessel tooling. If you have a fixed in-store date, work backwards from it and start those three items first.