Which packaging design best protects semisolids from moisture and light?

• A. Amber-colored glass with a screw-cap
• B. Opaque/light resistant containers, well-closed
• C. Transparent plastic cups opened at one end
• D. Aluminum foil-lined pouches

Answer: (B)

Protecting semisolids requires guarding against two degradation threats: light exposure and moisture ingress. An opaque, light-resistant container blocks photolysis and protects sensitive ingredients from light-driven changes, while a well-closed container minimizes water and air exchange, reducing moisture-related degradation and contamination. Together, these features address both main risks, making opaque/light-resistant packaging with a tight seal the most robust option for semisolids. The other designs either allow light to reach the product, fail to prevent moisture entry effectively, or rely on packaging that isn’t as secure or protective for semisolid formulations.