Lead Time Anatomy: Where the Twelve Weeks Actually Go

A supplier quotes four weeks and the product arrives in fourteen. The quote was for production, and production is a small part of the calendar. Understanding where the rest of the time goes is the difference between a launch date that holds and one that slips twice.

1. The quoted number

Production lead time is the time from a confirmed order and available materials to finished goods. It is typically 3 to 6 weeks for a cosmetic. It excludes everything that happens before the order is confirmed and everything after the goods leave the line.

2. Brief and quotation

Briefing a factory and receiving a usable quotation takes 1 to 3 weeks if the brief is clear and longer if it is not. A brief without a target price, a volume and a market produces a quotation that answers the wrong question, and the revision costs another week.

3. Sampling

Concept to approved lab sample takes 2 to 4 weeks with one round of revision. Each additional revision adds a week. A brief that changes mid-sample resets the process, which is the most common cause of a slipped launch.

4. Stability and challenge testing

Stability at 40 degrees runs 8 to 12 weeks, and the challenge test runs 4 to 6 weeks in parallel. These cannot be compressed without invalidating the data. They are the critical path for any new formula, and they should start as early as possible.

5. Materials

Packaging and raw materials have their own lead times: 2 weeks for a stock bottle, 6 to 10 weeks for a custom one, 3 to 6 weeks for a specialty active. A production slot is wasted if the bottle arrives late. Material availability is the most common cause of delay, more common than capacity.

6. Regulatory

A CPSR takes 2 to 4 weeks and depends on the safety assessor’s queue. A notification in some Asian markets takes longer. A product cannot ship to the EU without the CPSR, so this step sits on the critical path rather than in parallel.

7. Production

Production itself is 3 to 6 weeks once materials are in house. A factory with a full schedule quotes longer, and a factory that quotes very short is either free or optimistic. Ask for the current booking window rather than the standard lead time.

8. Quality release

Release testing adds 2 to 5 days: microbial, pH, viscosity, fill weight, label check. A batch that fails adds a week for rework or a re-make. Release is fast when the batch is good and slow when it is not.

9. Shipping

Sea freight from Asia to Europe takes 4 to 6 weeks plus 1 to 2 weeks of customs; air freight takes 3 to 7 days. A launch planned around sea freight has no slack. A launch planned around air freight has a cost.

10. Approval delays

Every approval that waits for a person adds days rather than hours. A sample sitting on a desk for a week is a week added to the calendar, and it is invisible in the project plan. Set approval deadlines and treat a missed one as a milestone slip.

11. Where it fits

Lead time runs across the mascara range; the capacity side continues in the capacity entry.