Skin care products that come in jars, especially those with anti-aging ingredients like antioxidants, vitamin C, and retinol, lose their healing powers in the presence of air. In other words, opening a jar lets air in, causing these important ingredients to begin deteriorating, and becoming less and less effective with each use. Also, see-through or clear glass jars, bottles or tubes are exposed to daylight, further compromising the efficacy of these types of ingredients.
Additionally, the hygiene is also a problem because when you dip your fingers into the jar, you contaminate the formula, even if your hands are clean or the spatula that accompanies some jar-packaged products is impossible to keep it completely clean. This hygiene issue stresses the preservative system, leading to further deterioration of the beneficial ingredients.
Packaging can directly affect products quality because there are many interactions which can occur between the product, the package, and the external environment. In the jar packaging, there remains a certain air.
But, cosmetic companies are still producing them and people are still buying them. And the question is why?
And the answer is that sometimes it is easier and less expensive for the company (and the people) to put their formulas in jars, but this affects the skin of course. They are taking a shortcut that reflects on our skin. On the other hand, smart skin care packaging such as stability-proof packaging, airless pumps, multi-layer tubes, opaque bottles, UV-protected containers and air-restrictive openings, may cost more, but it’s worthed if the formula is to work as effectively as it possibly can for our skin.
So, it is up to us to decide what kind of skin care packaging we will choose for the sake of our skin's health.