What should be done if the water and active ingredients in an emulsion separate?

When water and active ingredients in an emulsion separate, it is an indication that the emulsion has broken. This separation can compromise the stability, efficacy, and safety of the product. A broken emulsion often cannot be effectively re-emulsified through simple mixing, as the components may no longer interact properly. Additionally, using a product that has separated can lead to inconsistent application and unexpected results on the skin, which could be detrimental to the user's experience and possibly their skin health.

In practice, it is crucial to discard any emulsions that show signs of separation, as this ensures that clients are not exposed to ineffective or potentially harmful products. Maintaining the quality and safety of skincare products is paramount in esthetics, making it essential to follow appropriate guidelines regarding product usability.