Ashleigh Sullivan, Aesthetic Therapist
ABOUT US
Ashleigh Sullivan
Aesthetic Therapist
Ashleigh Sullivan is an accomplished Aesthetic Therapist at Define Clinic, bringing over a decade of experience in the health and beauty industry. Her extensive knowledge and skill set make her an integral part of the clinic, where she specialises in a range of advanced aesthetic treatments. Ashleigh’s dedication to her craft and her commitment to delivering exceptional results have earned her a reputation for excellence in aesthetic therapy.
MEET THE TEAM
Where It Started For Ashleigh Sullivan
Ashleigh’s journey in the health and beauty industry began with her completion of an NVQ Level 3 in beauty therapy. This foundational qualification set the stage for her career, providing her with a comprehensive understanding of beauty treatments and skin care. Her passion for aesthetics and her desire to enhance her skills led her to pursue advanced studies and certifications in various specialised treatments.
Throughout her career, Ashleigh has continually sought to expand her knowledge and expertise. She has completed advanced training in several cutting-edge aesthetic treatments, including Coolsculpting, microneedling, Cynosure IPL and miraDry. These certifications reflect her commitment to staying at the forefront of the industry and her dedication to offering her clients the most effective and innovative treatments available.
Her Time At Define Clinic
At Define Clinic, Ashleigh Sullivan is known for her proficiency in a variety of non-surgical aesthetic treatments designed to enhance and rejuvenate the skin. Her expertise in Coolsculpting allows her to offer clients a non-invasive solution for body contouring and fat reduction, helping them achieve their desired body shape without surgery. This treatment, which uses controlled cooling to freeze and eliminate stubborn fat cells, is popular among clients looking for a safe and effective way to sculpt their bodies.
Microneedling is another area where Ashleigh excels. This treatment involves the use of tiny needles to create micro-injuries in the skin, stimulating collagen production and promoting skin rejuvenation. Ashleigh’s precise technique ensures optimal results, helping clients achieve smoother, firmer, and more youthful-looking skin.
Her proficiency with Cynosure IPL technology enables Ashleigh to offer advanced laser treatments for a variety of skin concerns, including pigmentation, redness and unwanted hair. This versatile treatment uses intense pulsed light to target and treat specific skin issues, delivering clear and radiant skin. Her expertise in miraDry, a treatment for excessive sweating, provides clients with a long-lasting solution to a common and often distressing problem.
More Information
Ashleigh Sullivan’s extensive experience in the health and beauty industry has equipped her with a deep understanding of skincare and aesthetics.
She is passionate about helping her clients achieve their beauty goals and is dedicated to providing personalised care and tailored treatment plans. Her warm and approachable manner puts clients at ease, ensuring a comfortable and positive experience at Define Clinic.
In addition to her technical skills, Ashleigh is committed to ongoing education and professional development. She regularly attends industry conferences and workshops to stay up-to-date with the latest advancements in aesthetic treatments. This dedication to continuous learning ensures that her clients benefit from the most current and effective techniques in the field.
Ashleigh’s holistic approach to aesthetic therapy emphasises the importance of overall well-being and self-care. She believes that beauty and confidence come from within and works closely with her clients to develop comprehensive treatment plans that address their unique needs and goals. Her ability to combine various treatments and technologies allows her to achieve outstanding results, enhancing her clients’ natural beauty and boosting their self-esteem.
REVIEWS
WHAT PEOPLE SAY ABOUT DR ANNA GALANOUDI
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Five stars! The hygiene at Define Clinic London is immaculate, the calming ambiance made me feel at ease from the moment I walked in. The staff were professional and knowledgeable, guiding me through a quick microneedling treatment that delivered visible results. I loved the convenience of being able to book an appointment online and the easy access from public transport. If happiness had a location on Google Maps, it would be here. I will definitely be back for more skin boosters and recommend this clinic to anyone looking for top‑notch skincare.
Claire Gerring
2nd April 2026
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From the moment I arrived at Define Clinic Beaconsfield the experience was seamless. The staff were friendly and knowledgeable, the clinic was spotless, modern and welcoming. I felt comfortable asking about microneedling near me and got clear advice. I left feeling confident and will definitely return.
Ollie O’Hanlon
2nd April 2026
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I recently visited Define Clinic in Beaconsfield after seeing the incredible results they shared of Ulrika on Instagram, and I can honestly say the experience with Dr Benji Dhillon, exceeded all expectations. From the moment I walked in, everything felt professional, welcoming, and thoughtfully designed to put you at ease. The team were knowledgeable, attentive, and took the time to really understand what I was hoping to achieve. They explained every step clearly, which made me feel completely confident and comfortable throughout the process. And the results? Absolutely amazing. The outcome is natural, refined, and exactly what I had hoped for (if not better). It’s rare to find a clinic that combines such high standards of care with genuinely outstanding results, but Define Clinic truly delivers on both. A well-deserved 5-star experience, and I wouldn’t hesitate to recommend them to anyone considering treatment.
Laura Goodfellow
1st April 2026
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Karen McGuire
1st April 2026
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I love the calming ambience at Define Clinic London. The staff are friendly and professional, the clinic is spotless and the atmosphere is soothing. The level of professionalism impressed me, and the attention to cleanliness gave me confidence. I felt well taken care of by every member of the team. I’m excited to return for my next treatment . Highly recommend.
clare barclay
1st April 2026
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I was really impressed by how clean the space was at Define Clinic London. The team were friendly, knowledgeable and made me feel relaxed and welcomed from the moment I walked in. They answered all my questions about microneedling for me in a clear and helpful way.
Lee Richards
1st April 2026
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Dr Arreni was incredibly warm, welcoming, and easy to talk to. What really stood out was how thoughtfully she talked me through my options. She took the time to understand exactly what I was hoping to achieve and offered honest, realistic guidance — including clear timelines for recovery — without ever making me feel rushed or pressured. There was absolutely no sense of upselling, just genuine care and professionalism.
For something like an injectables appointment, it was surprisingly enjoyable. I felt listened to, understood, and completely confident in her approach.
The journey to the clinic was 100% worth it, and I can confidently say I’ve found my go-to practitioner. I’ll definitely be returning as a long-term client and wouldn’t hesitate to recommend her to anyone considering treatment.
Michelle Mikulsky
14th March 2026
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Friendly, thorough, transparent and offering excellent treatment – you know you’re in good hands here while the place feels not at all intimidating
Ingeborg van Lotringen
12th March 2026
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Dr Arreni was amazing! This was my first time getting any sort of work done and I couldn’t have been more happy with my results, Dr Arreni made sure everything was natural and just the way I wanted. I was made to feel comfortable throughout the entire process, which really eased any nerves I had. She was so nice and easy to talk to and I will 100% recommend her!
Jasleen Dhillon
9th March 2026
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I heard of Define Clinic through my workplace after they came and introduced their new clinic opening in Fitzrovia. I’ve always been interested in aesthetics and injectables but I find the market so oversaturated and it’s almost impossible to find a practitioner that you can trust and for the right price too.
I had my initial consultation with Dr Arreni for hyperpigmentation and under eye hollowness and she had a thorough chat with me about my skin goals and what she would suggest. We did a skin scan and she made a treatment plan for me which was emailed with pricing. The clinic also offers 0% financing which was great. I never felt like I was being pushed to buy anything and she was honest about expectations and told me what I would see with what treatment I would get. I decided to start with tear trough filler as that was my biggest concern and my appointment with Dr Arreni was smooth and pain free. She was extremely friendly and kind and made me feel at ease and I am overjoyed with the result. I feel like I can really trust her and her expertise as a skilled doctor and I will most likely keep this as my clinic of choice for all other treatments I would want in the future.
Shenhead
8th March 2026
Book Your Appointment Today
Experience the expertise and personalised care of Ashleigh Sullivan at Define Clinic. Whether you are looking to contour your body, rejuvenate your skin or address specific concerns, Ashleigh is here to help you achieve your goals. With her extensive knowledge, advanced techniques and compassionate approach, you can trust that you are in expert hands. Contact Define Clinic today to schedule a consultation with Ashleigh and embark on your journey to radiant, confident skin.
