A study was performed on a group of 15 women..
Here's their before and after shots from that study:

before and after images from City Lips users who acheived fuller lips

Recently, a group of 15 women ages 17-40 applied City Lips advanced formula every night for 30 days. Instant visible results are shown after 10 minutes of application and long term results are shown after 30 days of continued use. Photos are all actual results, and have not been retouched.

City Lips IN GOODHOUSEKEEPING

Good Housekeeping test CityLips collagen Lip plumping treatment

FROM THE GOOD HOUSEKEEPING INSTITUTE:

"Want lips this lush? Our testers did, so we asked them to try different treatments for a month, in hopes of releasing their inner Angelina Jolie. THE WINNERS: City Lips clear gloss Lip Plumping Treatment created the fullest smoochers.
-Good Housekeeping Magazine, Page 45."

"...The original winner. City Lips is still champion."
-Good Housekeeping

Common Questions:

How Does City Lips Work?

City Lips uses exclusive ingredients not found in any other lip treatment. These ingredients safely and painlessly stimulate your own natural collagen production. Celadrin® then reduces the breakdown of the newly formed collagen, making your lips fuller and dramatically reducing the lines around the lips. Hyaluronic acid provides incredible moisture and reduces wrinkles, giving you instantly younger lips while making them kissably soft and smooth!With City Lips, you achieve long-term results when used as directed.

How quickly will City Lips work?

You will see visible results within minutes of application. Once you apply City Lips, your lips will begin to absorb moisture and get fuller as time passes. Based on a study conducted with City Lips users, the average lip plump will last four to six hours. With twice daily use, long term results are seen in just a few weeks

Is City Lips safe?

Absolutely! You can use City Lips as often as desired. City Lips is safe to use while pregnant or nursing. All of the ingredients are clinically tested and approved for safety and effectiveness. City Lips is manufactured in an FDA-approved laboratory and is never tested on animals.

Many lip plumping products available in drugstore achieve a plumping “effect” through the use of an irritant like cinnamon or menthol. Those products create a tingling sensation—at best, they irritate your lips so they temporarily redden and swell; at worst, they can cause an embarrassing or painful reaction with the delicate skin of your lips! In any case, long lasting results cannot be achieved through gimmicks or irritants.

Long lasting rejuvenation treatments comes from increasing the collagen in your lips so that they become fuller from the inside out. You can achieve these results with painful, expensive injections, which can leave you looking overdone and “fake”—or you can invest in a lip plumping treatment that actually builds the collagen in your lips, giving you a gorgeous, lasting, natural looking pout.

In addition to increased collagen, lasting plumping results can only come from using a product that provides extreme moisture to your lips. As we age or experience the effects of the sun, fine lines and wrinkles form around our lips, thinning and drying that tender tissue. Using a lip treatment that provides extreme moisture and the ability to build collagen is the only way to achieve a youthful, natural, long lasting lip plumping result.

It's important to know that City Lips is a Lip Treatment and not a plumper. City Lips rejuvenates the lips while others use irritants for a temporary plump. Here's how City Lips compares to the competition.

Clear Treatment: Apply a generous amount of Clear Treatment every night before bedtime to enhance collagen production. Can be worn during the daytime under lipstick. Continued use will improve collagen production and increase fullness

City Lips Advanced Lip Plumper Formula uses the most powerful combination of collagen peptides and Hyaluronic acid. Together peptides and HA are proven to be most effective care for instant and long-lasting results for plump lips.

Finally, a safe, pain-free lip plumper that works INSTANTLY and has long-lasting results. CITY Lips Advanced Formula is formulated with a powerful dose of Collagen Peptides and Hyaluronic Acid (HA) Plumping Spheres that are distributed to your lips for a supercharged moisturized pout.

With every painless application this groundbreaking, high-potency formula goes to work instantly and continues working overtime for lasting results. While HA Plumping Spheres immediately swell, Collagen Peptides stimulate and prolong natural collagen production, together providing you with your fullest, sexiest pout ever!

CITY Lips launched in 2003, and quickly became a favorite, and customers raved about their results. It is the the overall winner in 2004. Good Morning America announced that CITY Lips “…increased lip size 3X more than the other competitors.” In 2007, Good Housekeeping Magazine tested and voted CITY Lips as the winner again.

Get a Natural Shine - Wear CITY Lips alone to create a natural enhancement of your lip color. CITY Lips increases circulation and enhances your lip color and plumps almost instantly after application.

Add Some Shine - Layer CITY Lips on top of your favorite lipstick or lip liner for added shine and moisture. CITY Lips works great as a gloss and a treatment.

Make Lips Appear Larger - Apply a dab of a light colored shimmering eye shadow (pink, gold, white, etc.) on the middle of your lower lip on top of your CITY Lips to make them look even fuller.

Apply a generous amount to clean dry lips. For best results wait 2-3 minutes before applying lip color. For increased plumping, apply clear formula every night before bedtime. Safe to use as often as desired. Continued use increases plumping benefits.

1.5ml “Mini” Set of 5 Colors: SIN City, NUDE York, TINSEL Town, Los AngeLIPS and Clear

ORIGINAL FORMULA Ingredients Hydrogenated Polyisobutene, Petrolatum, Microcrystaline Wax, PPG-51/SMDI Copolymer, Ethylhexyl Palmitate, Tribehenin, Sorbitan Isostearate, Palmitoyl Oligopeptide, Octyldodecyl Ricinoleate, Tetrahexyldecyl Ascorbate, Celadrin ™, Glycine Soja (Soybean) Germ Extract, Stearyl Glycyrrhetinate, Glycyrrhiza Glabra (Licorice) Extract, Citrus Grandis (Grapefruit) Fruit Oil,
Cananga Odorata (Ylang) Flower Oil, Dipalmitoyl Hydroxyproline, Benzyl Nicotinate, Simmondsia Chinensis (Jojoba) Seed Oil, Sodium Cocoylaminoacids, Sarcosine, Potassium Aspartate, Magnesium Aspartate, Isopropylparaben, Isobutylparaben, Butylparaben