Accelerated stability testing for pet shampoos typically runs 3 months minimum at elevated temperature and humidity (40°C/75% RH), simulating 12–18 months of shelf life. Testing checks pH drift, viscosity, color, odor, and microbial limits. Some retailers require full real-time data at 12 or 24 months. Budget $500–$2,000 per formula for third-party lab testing.
Read the full guide on small batch pet shampoo formulation equipment and supplies →