According to the Chicago Tribune, expiration dates on shampoo are chosen because they have been stability tested by the manufacturers, ensuring the products are still effective after that amount of time has passed. Typically, shampoo expires in three years.
Expiration dates on personal care items, such as shampoo, are set conservatively in order to account for a large range of storage conditions and customer handling. The Food and Drug Administration requires expiration dates to be printed on types of shampoo that have medicinal purposes, such as anti-dandruff shampoo. This is the reason that some bottles of shampoo have expiration dates while others do not.Learn More
Dove shampoo is a pH balanced, or pH neutral, shampoo. The shampoo ranges on the pH scale between a 6.5 and a 7.5.Full Answer >
Shampoos are made of a class of chemicals called surfactants, which have the ability to lower the surface tension of a liquid. These surface-active substances surround oily substances and dirt, which then makes it easier for water to wash them off the surface that needs to be cleaned. This ability to act as degreasers makes surface-active substances popular for cleaning applications and products like shampoos.Full Answer >
Sulfates in shampoo are bad because they are known to dry out hair when used frequently. Using shampoos that contain sulfates can lead to dryness, irritation and breakage.Full Answer >
Malaseb Shampoo is a pet shampoo that combines antifungal and antibacterial agents with coat conditioners to treat dandruff, yeast, ringworm and other bacterial infections in dogs and cats. This medicated shampoo kills bacterial, fungal and yeast micro-organisms and leaves the animal's coat soft and healthy.Full Answer >