When evaluating body care formulations, prioritize active ingredient concentrations (such as Hyaluronic Acid, Retinol, or Niacinamide) that align with your marketing claims. Ensure the pH balance is skin-compatible (typically 4.5–5.5). For emulsions like lotions, verify viscosity stability and preservative efficacy (e.g., Parabens-free or Phenoxyethanol levels) to ensure a shelf life of at least 24–36 months. Always request a Certificate of Analysis (COA) for every batch to confirm purity and ingredient consistency.