If you’re thinking about enhancing your lips, you’ve likely come across two of the most popular options: a lip flip or dermal fillers. A lip flip uses a wrinkle-relaxing treatment to soften the muscle around the upper lip, creating a subtle outward “flip” that makes the lip appear fuller,  without adding any actual volume.

Lip fillers, on the other hand, increase lip size by injecting a hyaluronic acid gel to physically add shape and fullness. Both treatments can enhance your lips, but they work in completely different ways. So, which option is right for you? Here’s a breakdown of the key differences.

What Is a Lip Flip?

A lip flip is a non-surgical treatment that uses the same solution commonly used for softening dynamic lines. Small amounts are injected into the muscle just above the upper lip.

A lip flip is ideal for people whose upper lip disappears or curls inward when they smile. By gently relaxing the muscle, the lip rolls slightly outward, creating the look of a fuller top lip without increasing its actual size. Lip fillers, by contrast, physically add volume and can reshape or plump the lips.

How Long Does a Lip Flip Last?

A lip flip usually lasts 8 to 12 weeks. Because the lips move constantly, the muscle relaxant tends to wear off faster than in other areas. Lip fillers typically last 6 to 12 months, depending on the product and individual metabolism.

If you enjoy the look of a lip flip, maintaining the results is as simple as scheduling touch-ups every few months. It’s also a great low-commitment way to try lip enhancement before committing to a longer-lasting filler.

Benefits of a Lip Flip

1) Subtle upper lip definition

A lip flip gently enhances the upper lip’s shape, creating a soft ski-jump curve along the vermillion border. This enhances definition and creates the illusion of more volume.

2) Softens vertical lip lines

Relaxing the upper lip muscle can help reduce the appearance of fine vertical lip lines.

3) Improves the appearance of a ‘gummy smile’

Targeted injections relax the muscles that lift the upper lip, helping to reduce excessive gum show when you smile.

4) Shows more of your lip when you smile

Instead of curling inward, the upper lip remains relaxed and visible, giving a slightly fuller appearance.

5) More affordable than filler

Lip flips require only 4 to 6 units of wrinkle-relaxing treatment, with Perth cosmetic clinics costing $75 to $150, compared to lip fillers which average $600 to $1200 per syringe.

6) No downtime

You can return to normal activities immediately after treatment.

7) Low commitment

Results last around 2 to 3 months. If you decide the look isn’t for you, the effects naturally fade.

Drawbacks of a Lip Flip

1) Results are subtle

A lip flip enhances shape rather than size. If you're looking for noticeably fuller, plumper lips, volumising treatments may be a better option.

2) Temporary changes in lip function

Because the treatment relaxes key lip muscles, you may temporarily notice slight difficulty with:

• spitting after brushing teeth
• whistling
• drinking through a straw
• eating with a spoon
• pressing your lips together
• pronouncing certain words

If your job involves frequent speaking or singing, choose an experienced injector to minimise these effects.

3) Results take time to appear

You won’t see immediate results. A lip flip takes 3 to 7 days to begin working, with full effects developing over 1–2 weeks.

4) Short lifespan (8–12 weeks)

Unlike lip fillers, which can last up to a year, a lip flip is a temporary enhancement that requires more frequent maintenance.

Frequently Asked Questions

How long does a lip flip take to kick in?

You’ll notice changes within 3–7 days, with full results in 10–14 days.

Are lip flips dangerous?

When performed by a qualified injector, a lip flip is very safe and has a low risk of complications.

Are lip flips permanent?

No. The effect typically lasts 8–12 weeks.

Can a lip flip be reversed?

No, you must wait for the treatment to wear off naturally.

Can I eat after a lip flip?

Yes. Avoid messy foods, straws, and excessive lip movement for about 3 days.

Can I get a lip flip after fillers?

Absolutely. Many people combine both treatments for enhanced shape and longer-lasting results.

Can I kiss after a lip flip?

It’s best to avoid pressure on the lips, including kissing, for 3–4 days.

Do lip flips bruise?

Slight swelling or bruising is normal and temporary.

Do lip flips hurt?

Like Botox injections, lip flip injectables may sting briefly, but discomfort is minimal. Most treatments use around 4–6 units in total.

Conclusion

A lip flip is perfect for subtle, natural-looking enhancement, especially if your upper lip disappears when you smile. Lip fillers are ideal if you want fuller, plumper lips with longer-lasting results.

Some clients choose to combine both, using filler for volume and a lip flip to sharpen definition and enhance the cupid’s bow.