Define by Jill

Define by Jill

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Registered Cosmetic Nurse and owner of Define by Jill. She is clinically guided and focused on natural facial harmony.

With 17 years’ experience in cosmetic Nursing, I specialise in natural-looking aesthetic treatments that help clients look refreshed and feel confident. Define by Jill is owned by Jill McIver, a registered nurse (RN NMW0001003228) and talented aesthetician with over a decade of experience. Passionate about helping people look as youthful as they feel, Jill has performed more than 20,000 treatments

13/08/2026

Microneedling, but make it a moment to switch off.

Our treatment room is designed to feel calm, comfortable and relaxing while your skin gets to work.

Microneedling uses controlled microchannels to stimulate your skin’s natural collagen and elastin production, supporting smoother, firmer and more refined looking skin over time.

Curious about what microneedling could do for your skin?

Save this post for your next skin treatment and comment “MICRONEEDLING” if you want to know more.

Photos from Define by Jill's post 11/08/2026

Your skin isn’t difficult. It just needs the right support.

Dermaviduals is science-led skincare designed to work with your skin barrier, making it suitable for all skin types, including sensitive and reactive skin.

No complicated routine. No unnecessary extras. Just professional skincare chosen around what your skin actually needs.

Ready to find your skin’s new essentials?

Shop our dermaviduals range in clinic.

10/08/2026

A little glimpse behind the scenes at Define by Jill.

From the smallest details to keeping everything running seamlessly, Kim ensures every client feels welcomed, comfortable and completely looked after.

Friendly, professional and attentive, every detail matters.

Photos from Define by Jill's post 07/08/2026

The treatment everyone’s talking about!

If you’ve been hearing everyone talk about the “salmon DNA facial,” this is why.

Deep Synergy Booster uses purified polynucleotides derived from salmon DNA to support your skin’s natural repair process. By stimulating collagen production and encouraging regeneration, it helps improve hydration, skin quality, texture and overall radiance.

It’s become one of the most sought after regenerative treatments worldwide because it focuses on healthier skin, not changing the way you look.

For the ultimate skin rejuvenation, pair it with our Ultraformer MPT. Together, they work to lift, tighten, stimulate collagen and enhance overall skin quality for results that are both natural and long lasting.

Think luminous skin. Improved resilience. A healthy glow that only gets better with time.

Experience the treatment everyone is talking about at Define by Jill.

Photos from Define by Jill's post 05/08/2026

To our wonderful patients,

We’ve had quite a few people asking recently whether we’re still performing certain cosmetic treatments in clinic, and the answer is absolutely yes.

The care we provide hasn’t changed. We are still offering the same treatments and services you’ve come to know us for, where clinically appropriate, plus introducing exciting new treatments along the way. What has changed is how we’re legally allowed to communicate about them online.

These advertising regulations have actually been in place for a little while now, but we wanted to be transparent with you about why you may have noticed a change in our social media and website content. Under the current rules, we’re unable to advertise or publicly discuss certain prescription-only cosmetic treatments, and we’re also unable to share certain transformation images that relate to those treatments.
While this does limit the educational content we can share online, it doesn’t stop us from having open, honest conversations with you in clinic. Every treatment recommendation is made as part of a personalised consultation with a qualified health professional, ensuring it’s appropriate for your individual needs and goals.

If you’ve been wondering whether a particular treatment is still available, or you’d like to discuss your options, we’d love to see you in clinic for a consultation. We’re always here to answer your questions and guide you through the best treatment plan for you.
Thank you for your continued trust and support. We appreciate you more than you know.

With love always,
Jill

Registered Nurse
RN: NMW0001003228

01/08/2026

Did you know PRP uses your body’s own natural growth factors to support skin rejuvenation? A personalised treatment designed to refresh, revitalise and enhance your skin from within.

31/07/2026

Sometimes we all need a little bit of this, and a little bit of that. And sometimes the smallest refinements can make the biggest difference.

Is there something you’ve been wanting to refresh? Book your consultation today and let’s create a personalised treatment plan just for you.

30/07/2026

Did you know skin needling isn’t just for the face?

This beautiful result was achieved after just two skin needling sessions, targeting post-pregnancy stretch marks. By stimulating your skin’s natural collagen and elastin production, skin needling can help improve the overall appearance and texture of stretch marks over time.

Every skin journey is unique, and a personalised treatment plan is the key to achieving the best possible outcome.

To learn whether skin needling is suitable for your concerns, book a consultation with the Define by Jill team.

(02) 4577 6699
[email protected]

28/07/2026

Subtle refinement. Thoughtful balance. Beautifully tailored results.

Every treatment at Define by Jill is approached with precision, artistry and a personalised consultation to enhance your natural features while respecting your unique facial harmony.

Book your consultation via the link in our bio or contact our team to learn more.

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Telephone

Address


Shop 1, 34-36 Macquarie Street
Windsor, NSW
2756