How Do Lip Fillers Work? And how Long Do They Last

Lip fillers are an increasingly popular treatment in the field of cosmetic dentistry.

Celebrities such as Kylie Jenner, Paris Hilton, and Megan Fox have all taken advantage of the procedure to give their lips an attractive boost.

But how do lip fillers work, and how do they affect your lips? Let’s look at this exciting form of cosmetic treatment in more detail below!

What are lip fillers?

Lip fillers are injections used to alter the shape of lips. They’re injected into the dermis layer of the skin, just below the surface level skin.

The main advantage of lip fillers is that they can add volume and fullness to your lips and make them look more plump and kissable.

They also provide a natural-looking color change that mimics your natural skin color.

This makes them ideal for people who want their lips to look fuller but don’t necessarily want surgery or long-term changes in their appearance.

How do lip fillers work?

Filler injections are used to enhance the appearance of lips, usually in conjunction with cosmetic surgery. They’re also used to correct excessive or underdeveloped lips, such as when they’re too thin or droopy.

Lip filler injections can be administered by a doctor or trained technician in a doctor’s office. The procedure typically takes about 30 minutes and is done under local anesthesia.

This means that you won’t feel any pain during the process.

What happens during the procedure?

During the lip filling process, a topical anesthetic will be applied to numb the surface of your lips and help you feel more comfortable during treatment.

Next, your doctor will use a cannula to inject filler into your lip by pushing it through the skin with a quick movement from inside your mouth towards your lips until you reach the desired volume.

Afterward, your doctor may suggest using a cold pack on your face for 20 minutes to help relieve swelling and reduce bruising.

If you have allergies, consult with your doctor in advance so that they can provide you with a personalized solution.

You can expect bruising for up to two weeks following the procedure, but this should subside quickly as the bruises fade away. The treatment procedure will take anywhere between 45 minutes and one hour. 

How long do lip fillers last?

Typically, your lip filler will last up to a year before you need a touch-up or a new injection. Most people’s lips return to their original size and shape within three months after receiving treatment.

However, you may notice that your lips are less full as time goes on because the collagen in the dermis around them diminishes over time and gradually shrinks away from the skin’s surface as we age – this is called fat atrophy.


Doctors use lip fillers to plump thin lips or soften aging effects on the lips.

Although they are temporary and might not last as long as you hoped, they’re effective at filling in thin lips and giving them a fuller look, which is why they’re so popular.