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Ultraviolet glass vs. Amber, Green, Blue or Clear Colour Bottles
Hi everyone,
I’m considering packaging for my skin care line. Compared with of amber, blue, green and clear glass, are deeper violet glass bottles really worth the extra price?
Does the brand matter? I’ve seen Miron Violet Glass Bottles featured on some write-ups.
By using deep violet glass bottles does it mean there is no need for preservative (I’m still pro preservative btw)? Or does it only mean it will have a longer shelf-life?
Greatly appreciate your feedback. -
6 Replies
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The only stability benefit colored glass bottles provide is stopping any chemical reactions that might happen due to exposure to light. Typically, this would prevent oxidation of “active” ingredients, keep colors from changing, and prevent fragrances from changing smell.
It will have zero impact on microbial growth so has nothing to do with whether you need a preservative or not.
As far as the color goes, that is more of a marketing decision as to whether it helps support the image of your brand. It may have some effect on formula stability but that can only be determined by conducting a stability test.
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In my short experience, the brand does not matter and neither should the color of the material. The color can be helpful to mask any discoloration that might occur to your product over time.
What makes a difference is the material you use. For example, there are different types of plastics. -
The Beauty Brains text states that sometimes a glass jar is preferable to plastic, to protect the ingredients from the outside. Any examples of such sensitive (common) ingredients? Thanks!
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Maybe Vitamin C? Or ingredients in the fragrance that could interact with the plasticizers in the plastic bottles.
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Fragrances mainly with plasticisers such as pthalates but not sure the latter are still used.
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in high concentrations, ammonia etches several types of plastic (we keep
it in glass bottles, and remove the wads from the lids); its use is generally limited to perms, oxidative dyes or depilatories, and concentrations in finished products are generally not high enough to cause damagebefore they were filled into aluminium tubes, oxidative dyes (based on PPD, resorcinol etc.) were filled into glass packaging because the active dyestuffs oxidise and visibly discolour when exposed to air, and most plastics provide an insufficient barrier to air
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