Some cosmetics require special packaging due to their special ingredients to ensure their active ingredients. Dark glass bottles, vacuum pumps, metal hoses, and ampoules are commonly used in special packaging.
Dark glass bottle
After being oxidized by ultraviolet radiation, photosensitive ingredients in cosmetics may not only lose activity and lose efficacy but may even cause sensitization and toxicity. For example, ascorbic acid and ferulic acid are easily photolytically oxidized, and vitamin A alcohols and their derivatives, furanocoumarin have photosensitivity and phototoxicity. In order to prevent such components from being oxidized by ultraviolet light, the packaging must be protected from light. Generally, dark opaque glass bottles are used as packaging materials, and dark brown glass bottles are the most common. To ensure convenient use and product hygiene, dark glass bottles are often used with droppers.
