Our Philosophy. Your Goals. Better Together.

Our team works together to ensure your goals and our expertise seamlessly align. We custom design every one of our patient's treatment plans because we know that one-size-fits-all doesn't apply to skincare. This is especially true when it comes to the fine art and science of injectables.

Our Approach to Injectables

Our mission is always for you to look like you - better rested, restored, and yes, even younger but always and forever, still you. No one else is you; that is your power.

Quote Icon

When I'm meeting with a patient for injections, I want to determine why they are noticing age-related changes in their faces. I'll often request they bring in photos of themselves from a few years ago. We identify areas of volume loss and use fillers to replace that which was previously there. This yields the most beautiful, natural results. I also use injectables to enhance your best feature or improve upon weaker features with subtle facial shaping. Lip filler is one of my favorite treatments to perform because it's an instant confidence boost! - Dr. Welsh

Quote Icon

Allure Magazine rated Dr. Kathleen M. Welsh as one of the nation's top lip injectors in 2019.

Neuromodulators/ Wrinkle Relaxers

Used for softening and preventing deep, persistent lines and wrinkles that develop over time, neuromodulators inhibit nerve signals in muscles that cause contractions and relax the facial muscles that cause lines and wrinkles. Results typically last 3-6 months.


We also often call on neuro-injections to effectively treat hyperhidrosis (uncomfortable over-sweating). In addition to Botox, the most widely recognized neuro product, we also offer Xeomin and Dysport.

Why offer more than one?

Just as we do with each part of a treatment plan, your provider will select the specific neurotoxin to achieve the most natural and beautiful results.

Dermal Fillers

With fillers, patient-oriented aesthetic mapping, precision-placement, gentle enhancement, individuality, artistry, and knowing when to not "overdo it" are the foundations of our approach.

At Bay Area Cosmetic Dermatology, our providers choose from a robust library of dermal fillers to achieve the most beautiful results depending on your goals:

  • HA Fillers: Belotero, Juvederm, Kysse, Restylane Refyne & Defyne, Voluma, Volbella and Belotero.
  • Calcium-based Microspheres Filler: Radiesse
  • Poly-L-lactic Acid Fillers: Sculptra

Why does our team of expert injectors routinely reach for Restylane Refyne?

  1. It's a natural, flexible filler that moves with your facial expressions?
  2. It's one of the longest-lasting fillers available, up to 12 months.
  3. Yields soft, natural results so you look like you

Other Injectables

We are also proud to offer Kybella injections for targeted fat reduction and Threadlifts for defining and lifting.


In the right hands, Kybella can yield dramatic results. It is the only FDA approved injectable proven to gradually diminish fat cells and provide natural, graceful results. We often use Kybella to reduce submental fullness (ie double chins) and to define jawlines by targeting the jowls.


Threadlifts are injectable, absorbable sutures we use to lift the brows, neck, and jawline or add definition to the lips. Threadlifts are especially helpful in cases where patients don't need more facial volume - just a lift!

Bay Area Cosmetic Dermatology is the #1 provider of Xeomin in the United States.

The Best Version of You.

Skin rejuvenation is similar to a fitness routine: we achieve optimal results with cross-training between running, yoga, weight training, diet, and sleep. Similarly, we use injectables as one part of a dynamic, holistic process towards graceful aging.

Quote Icon

We always work with you to develop a highly personalized treatment plan. There are two focuses during all visits with my patients: 1) what we need to address now and 2) what we need to prevent in the future. I love thinking about where signs of aging will occur in the next five years and mapping out a prevention plan. Everyone has a unique vision of beauty, and navigating that with my patients is one of the joys of my job. My goal is always to help you look and feel like the best version of yourself. - Dr. He

Quote Icon

Bay Area Cosmetic Dermatology was an Allergan Top 10 practice in the United States in 2016 (the makers of Juvederm and Botox).

Dr. Andrea Hui Austin’s Approach


We all want to look our best, no matter what age. Preventing the signs of aging is vital, and a Refresh can be accomplished at any time. This approach results in a very natural look, highlighting your signature features with filler and softening lines with neuromodulators. My goal is to make you look as natural as possible at every age. I also regularly use PDO Threadlifts, which lift and define without adding volume.


Restoration is one of our specialties. As an artist, I sculpt and shape your face to restore the contours of your youth. Collaboration and consultation are accomplished first, with carefully considered treatment plans. Often, I will ask you to bring in your favorite photos in which you feel most beautiful and confident. These are my "artist references." It often takes several visits with a combination of filler to revolumize and reshape, neuromodulator to erase lines, and PDO Threadlifts to lift your neck or jawline to achieve a Restoration.


Redesign is where it can get really fun. Here, we will also work with photos of your aesthetic goals, one feature at a time. The expectation is a true change in one's appearance yet with our signature natural touch. Fuller lips with crisp borders? Of course, with filler. Highlighted cheekbones and jawlines? Yes, with filler and Threadlifts. Brows like a supermodel? Here is where Threadlifts can really shine. Bring in your wishlist, and we will make each goal come true.

Dr. Andrea Hu Austin is a national educator for Galderma (the makers of Restylane, Dysport and Sculptra.). She leads one-on-one sessions to teach physicians how to safely and beautifully inject their products.

Before & After Photos

Quote Icon

Our approach to neurotoxins is to prevent, correct, and enhance. Expression lines on the forehead, eyes, lips, and lower face can be prevented and softened. We're looking for a natural positive expression, not a frozen look. I especially enjoy using neuromodulators for lifting the neck and defining the jaw. I also love them for softening lines above the lips, and the downward turn our mouths can take over time. - Dr. Welsh

Quote Icon

Dr. Kathleen Welsh and and Dr. Andrea Hui Austin are the #1 injectors of Restylane Refyne and Defyne in the country.

Request Consultation