Sorbolene is what your hospital gives you. Here is what it does not do.
Sorbolene cream is gentle, fragrance-free, and freely given to radiation patients across Australia. It is a sensible default. Understanding what a default is designed for, and what it is not, helps you make a better choice.
What sorbolene is
Sorbolene is a glycerine-based humectant cream. Sir Charles Gairdner Hospital in Western Australia gives it to every radiation patient at the start of treatment. Many other Australian hospitals and radiation oncology centres have similar protocols. Diabetes Australia recommends it as a baseline moisturiser for people managing diabetes-related dry skin.
Sorbolene is the universal default because it is gentle, fragrance-free, and does not cause problems. It is cheap. It is available everywhere. It soothes irritated skin and reduces water loss. For the purpose of providing every patient with something useful on day one, it serves that role well.
What sorbolene does not do
Sorbolene works through glycerine: glycerine draws water from the air into the skin, and the paraffin base locks that water in. For dry skin with a functioning barrier, this is effective.
The problem is what sorbolene does not contain: any lipid that replaces what the skin's oil glands produce.
When the sebaceous glands are disrupted by radiation treatment or by the effects of diabetes, the skin does not just lose water. It loses the fatty acid framework the barrier depends on. Sorbolene adds water. It does not replace the oil.
This is why many radiation patients find that sorbolene does the job for a few weeks but does not fully resolve the persistent dryness and sensitivity that develops as treatment progresses. The skin is asking for something sorbolene was not designed to give.
Why the oil matters
The specific fatty acid that sebaceous glands produce and that depleted skin lacks is palmitoleic acid. It is an omega-7 fatty acid and a component of sebum. When sebum production is disrupted, this fatty acid is no longer available for barrier function.
Standard moisturisers, including sorbolene, do not contain palmitoleic acid. They address the downstream symptom of dryness but not the upstream cause of the missing lipid layer.
Mac Pure uses macadamia oil as its base because macadamia oil contains 17-22% palmitoleic acid. This is not a coincidence. It is why macadamia oil was chosen over every other plant oil available. The goal is to provide the specific fatty acid that depleted skin is missing, not just to add surface moisture over the top of the problem.
Side by side
| Feature | Mac Pure Calm+ | Sorbolene (generic) |
|---|---|---|
| Fragrance-free | ✓ Yes | ✓ Yes |
| Palmitoleic acid (omega-7) | ✓ 17-22% (macadamia oil) | None |
| Mechanism | Sebum fatty acid replacement | Humectant (water retention) |
| Suitable for radiation-affected skin | ✓ Yes, formulated for it | Default use, not formulated for it |
| Suitable for diabetic skin | ✓ Yes | General dry skin baseline |
| Australian made | ✓ Yes | Varies by manufacturer |
Formulated for what sorbolene does not address.
Calm+ is suitable for skin going through radiation treatment, managing diabetes-related dryness, or experiencing the gradual skin changes that come with age. Available from $29.95.
Shop Calm+ from $29.95Mac Pure products are cosmetics, not therapeutic goods. They are not intended to treat, cure, or prevent any medical condition. Always consult your oncology team or treating clinician regarding skin care during active treatment.