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Botox®Cosmetic is the most well-known injectable neuromodulator. Made by Allergan, it temporarily relaxes facial muscles to soften the look of dynamic facial wrinkles created by repeated muscle movement (think: frown lines and furrowed brows). It works by blocking nerve signals to the muscles, so the injected muscle can’t contract.

Originally developed to treat medical conditions such as cerebral palsy. Botox is FDA approved to treat crow’s feet, frown lines, and forehead lines.

It’s also used to soften and smooth lip lines, “bunny lines” on the nose, chins, and neck bands. When injected above the upper lip, it can also create a “lip flip” (more on that below).

the neurotoxin can also relax muscles in the jaw. “A very popular area for Botox is in the masseter muscle, either to treat TMJ or for facial slimming,” notes New York City-based dermatologist Dr. Michele Green. “Treating this area has positive cosmetic results, and it helps patients who grind their teeth.”

Medical uses include treatment for hyperhidrosis (excessive sweating on the underarms), a lazy eye (known medically as strabismus), chronic eyelid twitching (blepharospasm), chronic migraines, other types of muscle spasms, and vaginismus.


Please allow at least 15 minutes for your testing appointment.


It will take about 10 minutes for the testing solution to return a result. Your official Digital Health Certificate will be sent to you as soon as it's generated, usually within 2-3 minutes of your appointment. In rare cases, it may take up to 5 hours for results to be delivered.

Each Kit contains 2 tests and one activation code. One test is a spare, in case of inconclusive results on the first test. 

Each test contains a box, sterile swab, pre-filled tube of testing reagent, and a test strip. Each Kit has a unique activation code to identify your results.

Note that there are enough supplies for one Kit per person. Two people cannot share one RapidReturn Kit. 

Purchase one Kit per traveler.


The testing specialist will ask to see your passport before the test begins to confirm your identity, required to issue a Digital Health Certificate.


If you do not have your passport handy, a US-issued driver’s license is also acceptable.

CityHealth ships within the United States only.

We recommend purchasing your kits before you leave, as we cannot guarantee international shipping.

Orders placed before 3 pm PST will ship same day. 

Orders placed after 3 pm PST will ship next day.

Regular orders will arrive within 3-5 days. 

Express orders will arrive the next day.

Yes. This test is designed for travelers, and all contents are shelf-stable and approved as cabin luggage

You will know your COVID status as soon as your sample is analyzed, which takes about 10 minutes.


After your test, you’ll receive a secure email and text message with a link to view and download your test results, called a Digital Health Certificate.


To keep your data secure, this link will expire in 72 hours. You will need to enter your first name, last name, and date of birth to access your results.

Pre-travel COVID tests must be taken within 3 days (72 hours) of your planned departure.


Simply scan the QR code on the test, or log in to to activate your kit and take your test.


No appointment needed - testing specialists are standing by 24 hours a day, 7 days a week.


Note: If your flight is delayed by more than 24 hours, you may have to re-take your test so that your results fall within the 3-day testing window.

About COVID-19 Testing for International Travel

Depending on your airline, you may be able to upload your Digital Health Certificate (your test results) to your airline’s booking app.


You can also present your Digital Heath Certificate on your mobile device or print a copy to show at the airport.

The type of test needed for international travel depends on the requirements of your destination country. For up-to-date information, please view these International Travel Restrictions by Country.


To re-enter the USA, a negative Rapid Antigen or Molecular PCR test, taken within 3 days of scheduled departure, is required.

This test is a Rapid Antigen test and is approved by the CDC for re-entry to the United States.

Check with your destination country. In most cases, you will be asked to provide a copy of your positive COVID test (a NAAT test, from a CLIA certified laboratory) and a signed letter from a medical professional stating that you have fully recovered and are not exhibiting any symptoms. This letter must be on professional letterhead, signed and dated at least 10 days after your positive test result, and no more than 14 days before your departure.


Requirements are subject to change without notice, so please check with your destination country for the most up-to-date requirements.

Yes. Per CDC recommendations, even fully vaccinated travelers are required to present proof of a negative COVID test before traveling to the US.

Without proof of a negative COVID test, you may not be allowed to board a plane bound for the US.


You must take a pre-travel COVID test 3 days before your scheduled departure, even if you are fully vaccinated.


The CDC recommends that travelers get COVID tested within 3-5 days of returning from international travel. Even if you’re fully vaccinated, you can still carry and spread COVID-19 variants.

Per CDC's guidance on international travel during COVID-19 anyone who is not vaccinated should avoid travel.


You should only travel after being fully vaccinated (2 weeks after your second dose, or 2 weeks after getting the single-dose Johnson & Johnson vaccine).

Yes, CityHealth has several COVID testing locations throughout the San Francisco Bay area.
We also offer in-home, mail-in, pre-travel, workplace, and event testing options.


For more information, please visit our COVID testing page.