What stability testing is recommended for shampoo/conditioner sold in the U.S. (heat, freeze-thaw, shelf life)?

Quick Answer (for busy buyers)

Here’s the buyer-first summary. If your brand name is on the label, you usually act as the responsible person and must ensure the listing is submitted and kept current.

• For U.S. market listings, we usually run a practical stability package: accelerated heat (e.g., 40-45C for 8-12 weeks, plus an optional higher-temp stress point), freeze-thaw (3-5 cycles such as -5C to 25C), and real-time aging at ambient to support your intended shelf-life claim.
• We track key attributes each interval: appearance, odor, color, viscosity, pH, separation, and performance (foam/slip), plus container compatibility (pump/clogging, leakage, label adhesion).
• We can help set up the study plan, retain samples, and coordinate testing/documentation (stability summary, COA, and supporting files).
• If you need third-party inspection/report tracking, we can also support that workflow.
• On execution: typical OEM MOQ guidance is ~1,000-3,000 units per SKU depending on formula and packaging.
• After sample approval, bulk production is commonly 10-20 working days; raw material production is ~5-7 days with ~5 days testing, and finished goods production is ~7 days.
• Packaging ordering often takes 10-30 working days (e.g., glass bottle ~15 days, acrylic bottle ~30 days, tubes ~15 days; single box ~15 days, set box ~20 days).