Have you ever received printed cosmetic bottles only to find that the lettering comes off when you scratch it with a fingernail?
The first questions are usually straightforward: Is the ink adhesion poor? Was the printing process defective? Did the manufacturer fail to cure the ink properly?
These are possible causes, but there is another factor that is easy to overlook: the effect of the cosmetic formula on the printed surface.
If the printing remains intact on an unused bottle but starts peeling, smearing, or coming off after contact with the formula, the issue may involve chemical compatibility between the product and the packaging decoration.
Understanding the difference between poor ink adhesion and formula-related damage can help brands identify the cause and choose a more reliable packaging solution.
A customer once asked a question that may sound quite technical:
“If a cosmetic formula contains both water and oil, could an inconsistent water-oil ratio during dispensing mean that the pump is defective?”
The answer is not simply yes or no.
A pump dispenser does not normally cause a properly formulated product to separate into water and oil. However, the pump structure and dispensing conditions can affect the composition of each dose when the formula is already separated or does not remain uniform.
To understand why, we need to look at the formula, the pump mechanism, and how the two work together.
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