An ampoule is a small sealed vial that is used to contain and preserve a sample, usually a solid or liquid. Ampoules are usually made of glass. They are commonly used to contain pharmaceuticals and chemicals that must be protected. Ampoules can be pressurized, have air evacuated from them, and have the air in the ampoule replaced with other gases, often inert ones. They often have colored rings of paint or enamel around their necks that are meant to identify the substance inside the ampoule.

In the context of skincare, an ampoule is a type of treatment that contains highly-concentrated skincare ingredients. They are designed to deliver small, targeted dosages in order to address a specific skin concern, like dark spots and discolorations. Ampoules are similar to serums, but they are more potent and usually come in smaller packages. They are used occasionally as a booster or when youre having a skin crisis of some sort. Ampoules can target skin concerns even with 1-2 applications. They are essentially highly-concentrated formulations with active ingredients that target specific skin concerns.

The main difference between an ampoule and a serum is their concentration. An ampoule is a more potent version of a serum and is used on occasion, whereas a serum can even be used twice a day. Both have the ability to brighten, tighten, hydrate, protect, nourish, and repair the skin. It is advisable to consult a dermatologist to ensure that the ampoule that you pick is target-based, thus ensuring the treatment is effective.