Keloid & Hypertrophic

Scar Treatment

Scars are a natural part of the tissue healing process, but in some cases, they can become excessive and unsightly. Keloid and hypertrophic scars are the result of an abnormal wound healing response in certain individuals.

Understanding Keloid and Hypertrophic Scars:

They can occur due to trauma, inflammation, surgery, burns, or even spontaneously. Keloid scars often appear as raised, red or purple-coloured scars with a firm texture. Those with darker skin and younger patients are more prone to keloid scar formation. Distinguishing between keloid and hypertrophic scars can be challenging. Keloid scars tend to extend beyond the original wound's boundaries and do not regress, whereas hypertrophic scars typically stay within the wound area and may improve over time.

Hypertrophic & Keloid Scarring Treatment

Treatment Options:

This treatment involves applying liquid nitrogen (commonly known as dry ice) to the keloid scar. Clinical studies have shown flattening within a few sessions. Cryotherapy can be combined with corticosteroid injections into the scar for enhanced results.

Corticosteroid creams and injections (e.g., triamcinolone acetonide) are common modalities for treating keloid scarring. While they may not make keloids disappear entirely, they can help flatten the scar and provide symptomatic relief. Typically, a series of injections is needed at 2-3 week intervals to achieve the best results.

Topical Silicone Gel:
Topical silicone gel sheeting is a painless method to treat hypertrophic and keloid scars. Silicone hydrates the skin, stimulating new collagen production. This gel needs to be used for two months. Examples of silicone gels include Dermatix.

Laser Treatment:
Vascular lasers (V laser) can reduce the redness in keloid scars by targeting blood vessels within the scar tissue, effectively shutting them down.

Other Treatments NOT Available at The Marr Clinic

5-Fluorouracil Injections (5-FU):
5-FU can be used alone or in combination with corticosteroid injections to treat keloid scars. This treatment inhibits fibroblasts from producing new scar tissue and is also used as a chemotherapy agent.

Surgical excision of keloid scars can be effective especially if its combined with corticosteroid injections. Recurrence rates are high. Hypertrophic scars, on the other hand, can be successfully treated with surgical excision.

Radiation Therapy:
Similar to radiation therapy for cancer treatment, radiation therapy can help reduce the formation of scar tissue in keloid scars.


Dr May Marr Cosmetic Physician Lennox Head


Dr May Marr is a Flinders University Medical School graduate and a member of the Royal Australasian College of Physicians. She has a long-held interest in aesthetic medical procedures and evidence-based skin care. She holds a passionate belief that people should have access to procedures and products that are research-backed, ethically prescribed and skilfully delivered.

Dr Marr has trained with Dr Jacque Le Coz at the Institute of Mesotherapy in Paris. She holds an Advanced Diploma in Dermatology from the Australian Institute of Dermatology and in 2020 completed her Dermatology Fellowship.

The ethical, educational and procedural standards that Dr Marr brings to aesthetic medicine have been recognised by some of the largest aesthetic companies in the world. She holds advanced injector status and her extensive clinical experience sees her regularly called upon as an industry educator.