Q:

What are shampoo expiration dates?

A:

Quick Answer

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.

Know More

Full Answer

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 about Shampoo & Conditioner

Related Questions

  • Q:

    Is Dove shampoo a pH balanced shampoo?

    A:

    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 >
    Filed Under:
  • Q:

    What is dry shampoo?

    A:

    Dry shampoo is a starch- or silica-based product that absorbs excess oil from your hair and scalp without the use of water, giving the look and feel of clean hair. It comes in powder or liquid form, as well as an aerosol spray, and is often used before styling hair.

    Full Answer >
    Filed Under:
  • Q:

    What is a medicated shampoo?

    A:

    According to WebMD, medicated shampoos are often used in the care and treatment of skin and scalp diseases such as psoriasis. WebMD also reports that medicated shampoos, as well as creams or oils which are used to treat skin conditions, frequently contain salicylic acid or coal tar.

    Full Answer >
    Filed Under:
  • Q:

    What is shampoo made of?

    A:

    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 >
    Filed Under:

Explore