Phase 1 — The formulation brief
Everything starts with a written brief. A good brief specifies the target consumer, the sensorial signature (texture, scent direction, finish), the claims you need to be able to make, the price ceiling per unit, the packaging constraints and any non-negotiable or excluded ingredients.
Phase 2 — Bench samples and revision rounds
The lab produces a first bench sample within 2 to 4 weeks. Expect 2 to 4 revision rounds; brands that approve on the first sample usually have not stress-tested the product on real users.
Phase 3 — Stability and compatibility testing
Once a formula is locked, accelerated stability runs 8 to 12 weeks at elevated temperature and humidity, plus a packaging compatibility test in the chosen primary pack. Real-time stability continues for 12 months in parallel.
Phase 4 — Pilot batch and scale-up
A pilot batch — typically 25 to 100 kg — proves the formula behaves identically at production equipment scale. This is where viscosity, color and pH drift problems usually surface and where you sign off on a 'golden' reference sample.
Phase 5 — Production and release testing
Every production batch is tested against the golden sample for appearance, pH, viscosity, microbial load and active assay where relevant. A Certificate of Analysis is issued before fill and a retain sample is held for the product's shelf life.
Frequently asked
- How long does skincare formulation take?
- From brief to approved formula is typically 8 to 16 weeks. Add 8 to 12 weeks of accelerated stability before first production. A realistic end-to-end timeline from kickoff to in-hand inventory is 6 to 9 months.
- Who owns the formula at the end of the project?
- It depends on your development agreement. Default contracts usually leave ownership with the manufacturer. Negotiate IP ownership or an exclusivity window upfront if you intend to switch producers later.