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Sunlight damage to Cosmetics
Hi after unsuccessful search of a light box for cosmetic stability testing I decided to make my own. Anyone knows which range of sun wavelength is important for cosmetic stability testing? UV? or should I aim for something that mimics full sun spectrum?
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5 Replies
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hi
There are some UV campers out there but if you really wanna test the Sun Stability of your Product in your Packaging you need a full wavelength of sunlight. I did several UV Champer Testings and they are just a hint if your Product is problematic or not but they will not show 60 % of the problems that can occur in real sunlight over a longer time. Cosmetic Products contain a lot of different Ingreadienst and every one of them can respond to different types of wavelengths.
You can get a Sun Light imitating light that will give you a very broad spectrum if you want to be more exact about the amount and time your product is exposed to the light. I am not sure if all the UV will be in then
in Our lab test it is normally just behind a window for 3 to 6 months depending on the season we start the test. Autem and Winter longer than spring and summer due to less direct sun in winter.
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Good for you @Mondonna, been there and done that myself many years back in the lean days. Without Amazon or Ebay I took a trip to the aquarium supply shop to get the lamp. Anyway, you want to test at 285 - 340nm for UV-B and far UV-A where most of the action is. Most blacklights emit nearer to 285nm if I remember.
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Thanks @Gordof for sharing your experience.
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OMG @chemicalmatt I am so grateful for your response. I have been looking for an answer for so long and no one was able to give me a clue. The black lights in the market are 395nm-405nm. Will do some more research to see if there is any lights with the UV-A and UV-B range you suggested.
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What packaging has your product vulnerable?
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