About Dr Stef | Doctor-Led Aesthetic Clinic Johannesburg
Meet Dr Stef

Considered care. Quietly luxurious.

Radiant Secrets is a doctor-led practice in Illovo, built on a simple belief. You should look like yourself again, rested, lifted and lit from within, never altered, never obvious. This is aesthetic medicine with restraint.

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Dr Stef, HPCSA-registered medical doctor and founder of Radiant Secrets, doctor-led aesthetic clinic in Illovo, Johannesburg
The Philosophy

Why I treat the way I do.

Most women who sit down with me say a version of the same thing. They feel younger than they look. They catch a certain light, a photo, a video call, and notice a heaviness or a tiredness that does not match how alive they feel inside.

I understand that feeling, and I take it seriously. Your face holds your history and your expression. My job is to protect both while gently restoring what time has softened.

I trained as a medical doctor before I ever picked up a needle. That order matters. I read a face the way I was taught to read a body, by anatomy first, concern second, treatment last. I will tell you what you need, and just as importantly, what you do not.

My measure of success is simple. People should notice you look well, not that you have had something done.

This is not about chasing youth or following trends. It is about helping you age beautifully, intelligently and on your own terms, with a doctor who guides you honestly at every step.

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Qualifications and Training

A doctor first.

Aesthetic medicine in South Africa is lightly regulated, which is exactly why credentials matter. Here is who is looking after your face.

NameDr Steffani Ovadia
Medical DegreesMBBCh, BHSc
UniversityUniversity of the Witwatersrand, Johannesburg
RegistrationHPCSA-registered medical doctor
Experience8 years in medicine
2 years in private aesthetic practice
PracticeFounder, Radiant Secrets, Illovo

Qualified at Wits

I studied at the University of the Witwatersrand in Johannesburg, first earning a Bachelor of Health Sciences in Biomedical Sciences, then qualifying as a medical doctor with my Bachelor of Medicine and Bachelor of Surgery. Medicine came first, and it shapes everything I do.

Aesthetic training

Beyond my medical degrees, I have completed focused, hands-on, CPD-accredited training in the treatments I offer, so that every procedure is performed with current technique and a steady, conservative hand.

  • Toxin and dermal filler training, CPD-accredited (Medskills Training Academy)
  • Cannula filler technique, CPD-accredited (Medskills Training Academy)
  • Intravenous vitamin therapy training, CPD-accredited (Medskills Training Academy)
My Approach

Three principles that guide every treatment.

Diagnosis before treatment

Every face is read by its anatomy first. I look at structure, skin quality and how you have changed, then build a plan around you, never a copy and paste protocol.

Restraint over volume

Less, placed well, by a doctor who understands the face. The goal is balance and softness, not fullness. You should leave looking refreshed, not different.

A plan, not a quick fix

Skin and structure respond best to consistency over years. I think in terms of long-term skin health and graceful ageing, not a single appointment.

Meet Your Skin Expert

Tsholo. Healing hands, considered touch.

Alongside the doctor-led treatments, Tsholo cares for your skin between visits. She brings a calm, attentive presence and a real understanding of mature, changing skin.

Her facials are medical-grade and deeply restful, designed to support skin quality, glow and barrier health, not just to pamper. She works to the same standard of restraint and care that guides the whole practice.

Many women begin their journey with Radiant Secrets in Tsholo's hands, a gentle, low-pressure first step before any decision about injectables is ever made.

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Tsholo, skin expert at Radiant Secrets doctor-led aesthetic clinic in Illovo, Johannesburg
Dr Stef and skin expert Tsholo at Radiant Secrets, a doctor-led aesthetic clinic in Illovo, Johannesburg
The Space

71 Central Avenue, Illovo.

Radiant Secrets was designed to feel calm the moment you walk in. Discreet, private and quietly elegant, it is a space where you can ask anything without judgement and never feel rushed.

There is no loud, clinical waiting room and no pressure. Just a considered environment, soft daylight and the unhurried attention of a doctor who treats women like you every day.

We welcome women from across Johannesburg's leafy north, including Illovo, Sandton, Hyde Park, Rosebank, Houghton, Melrose, Parktown, Bryanston and Morningside.

8Years in medicine
Doctor-ledEvery treatment, every plan
IllovoDiscreet, private practice
Start Gently

No pressure. Learn first.

The Journal

Honest, doctor-written notes on skin, ageing and what actually helps.

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Find Your Starting Point

Not sure what you need. A short, guided quiz points you to the right first step.

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The Radiant Society

A private, warm community of women caring for their skin with intention.

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Your First Step

Begin with a Signature Youth Consultation.

This is where trust begins. We sit down together, I assess your skin and structure honestly, and you leave with a clear, personalised plan and no obligation to go further.

Radiant Secrets · 71 Central Avenue, Illovo, Sandton, 2196 · Monday to Friday, 09:00 to 16:00 · 079 173 8760

© Copyright 2026. Radiant Secret. All Rights Reserved.

Radiant Secrets is a doctor-led clinic founded by Dr Steffani Ovadia, MBBCh, BHSc, HPCSA-registered medical doctor. Illovo, Johannesburg.