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The light-proof performance of cosmetic bottle packaging refers to its blocking effect on light. Its design and material selection are intended to reduce or prevent the adverse effects of light on the quality and stability of cosmetic products. Light protection performance is one of the key factors for extending the shelf life of cosmetics, maintaining ingredient stability, and ensuring product quality.
The effect of light on cosmetics:
Oxidation reaction: The active ingredients in some cosmetics are easily stimulated by light and undergo oxidation reactions, leading to problems such as product color changes and hard texture.
Inactivation of photosensitive ingredients: Certain ingredients, such as vitamin C, are sensitive to light, and exposure to light will cause them to inactivate and weaken the efficacy of the product.
The light-proof performance of cosmetic bottle packaging is reflected in the following aspects:
Material selection: Cosmetic bottle packaging usually uses opaque or dark-colored materials, such as dark brown, dark green or dark blue glass or plastic, to effectively reduce or prevent the transmission of light. This material choice helps prevent harmful light rays from entering the interior of the packaging and protects the stability of the cosmetic product.
Coating technology: Cosmetic bottle packaging may use surface coating to enhance its light-proofing properties. The use of light-blocking coatings can effectively filter out ultraviolet rays and harmful rays, reducing their impact on products.
Multi-layer packaging structure: Some high-end cosmetic bottle packaging adopts a multi-layer structure, including a barrier layer that can more effectively block light. This design can provide more comprehensive protection and ensure that the product is minimally affected by light inside the package.
Sealing design: The sealing design of cosmetic bottle packaging is also closely related to light protection performance. Through the use of leak-proof structures, sealing gaskets and other designs, the air in and out of the packaging can be reduced and the oxidative impact of light on cosmetics can be reduced.
