VIOLUX 500ml UltraViolet Glass Apothecary Jar w/ Glass Closure SUPERIOR PROTECTION against harmful light rays that cause organic materials to breakdown and decompose rapidly. PRESERVE your products with an airtight seal to insure optimal freshness, potency and quality. LIFE ENHANCING Violux violet glass allows nurturing UVa and infrared light rays in that preserve organic materials, freshness, color, aroma and taste. SCIENCE + BEAUTY Violux glass containers are extremely effective as well as beautifully designed to add more value to your product. MONEY-BACK GUARANTEE if you are not 100% satisfied with you VIOLUX glass products you can return them for your money back.