Manage mild plaque psoriasis at home with heavy moisturisers, coal tar and salicylic acid — plus the red flags that mean it is time to see a GP.

Psoriasis is a chronic (long-term) skin condition driven by an overactive immune system. Instead of skin cells maturing and shedding over roughly a month, they are produced far faster and pile up on the surface, forming raised, red or scaly patches called plaques. The most common form is plaque psoriasis, which typically appears on the elbows, knees, lower back and scalp. It is not caused by poor hygiene, and it is not contagious — you cannot catch psoriasis from someone or pass it on through contact.
Psoriasis tends to come and go in flares, with periods of clearer skin in between. Severity ranges widely: some people have a few small patches, while others have plaques covering large areas. Around one in three people with psoriasis also develop psoriatic arthritis, which causes joint pain and stiffness. Because psoriasis is immune-driven rather than a simple skin surface problem, treatment aims to slow the overactive skin turnover and calm inflammation rather than to remove plaques on the surface alone.
If your psoriasis is mild and covers only small areas, several over-the-counter approaches can help relieve symptoms and control flares. These work best used consistently rather than only when a flare is at its worst. Speak to your pharmacist about which combination suits your skin, and always patch-test a new product first.
Moisturising is the foundation of psoriasis self-care and the single most useful thing you can do at home. Thick, fragrance-free emollients — ointments and heavier creams rather than light lotions — reduce dryness, soften scale, ease itching and can help make plaques less noticeable. Apply generously and often, ideally several times a day and straight after showering while the skin is still damp to lock in moisture. Ointment-based emollients hold moisture better than watery lotions, though they feel greasier. Fragrance-free products are preferable because added perfumes can irritate already-inflamed skin.
Coal tar is one of the oldest treatments for psoriasis and is available over the counter in Australia as creams, ointments, bath additives and medicated shampoos. It can help slow the rapid skin cell growth that drives plaques and reduce scaling and itch. Better Health Channel lists coal tar preparations among the recognised options for relieving psoriasis symptoms. Coal tar can stain clothing, bedding and light hair, has a distinctive smell, and may make skin more sensitive to sunlight, so follow the product directions closely. Tar-based shampoos are a common first step for mild scalp psoriasis.
Salicylic acid is a keratolytic — it helps soften and lift the build-up of thick scale so that other treatments, such as moisturisers or coal tar, can work more effectively. It is found in some medicated shampoos, creams and scalp preparations. Salicylic acid is best thought of as a scale-remover rather than a treatment for the underlying inflammation, so it is often combined with other approaches. Avoid using it over large areas of skin, and check with your pharmacist before combining products, as layering several actives can be irritating.
Mild topical corticosteroids such as hydrocortisone 1% are available over the counter in Australia and may relieve small, itchy or inflamed patches for short periods. They reduce redness and itch but are intended for limited use on small areas — not for long-term or widespread application, and generally not for the face without medical advice. Overusing topical steroids can thin the skin and cause a rebound flare when stopped. If a small area is not settling within the time stated on the label, or you find you need steroid cream repeatedly, that is a signal to see your GP rather than continuing to self-treat.
| Option | What it does | Best for | Key caution |
|---|---|---|---|
Heavy emollient / moisturiser | Softens scale, eases itch and dryness | Everyday base care for all mild psoriasis | Choose fragrance-free; reapply often |
Coal tar preparation | Slows skin cell turnover, reduces scale and itch | Plaques and mild scalp psoriasis | Stains fabric; can increase sun sensitivity |
Salicylic acid | Softens and lifts thick scale | Stubborn, built-up scale (incl. scalp) | Avoid large areas; can irritate |
Mild hydrocortisone 1% | Reduces redness and itch | Small, itchy patches, short-term | Not for long-term or widespread use |
The products below are examples of mild hydrocortisone preparations available in Australian pharmacies. Coal tar and salicylic acid come in many brands and formulations — ask your pharmacist to point you to a product suited to the area you are treating.
Because psoriasis flares are often set off by identifiable triggers, gentle skin care and trigger awareness are a practical part of managing it. Handle your skin kindly: use lukewarm rather than hot water, pat rather than rub dry, choose soap-free washes, and moisturise straight afterwards. Avoiding skin injury matters too — psoriasis can appear at sites of cuts, scratches, sunburn or friction, a phenomenon known as the Koebner response.
Common triggers to be aware of include psychological stress, skin injury, infections (streptococcal throat infection can trigger guttate psoriasis in particular), cold or dry weather, smoking, heavier alcohol use, and certain medicines — including some beta-blockers, lithium and antimalarials. If you notice a flare after starting a new medicine, do not stop it yourself; raise it with your GP or pharmacist so any change is managed safely. Keeping a simple diary of flares can help you spot your own personal triggers over time.
When psoriasis is more than mild, or affects hard-to-treat areas, it needs a doctor's assessment rather than self-treatment. Your GP may prescribe stronger topical treatments — such as moderate-to-potent corticosteroids or vitamin D analogues like calcipotriol (often combined with a steroid) — that are not available over the counter. For more extensive or stubborn psoriasis, dermatologists offer narrow-band UVB phototherapy, which involves controlled ultraviolet light in a clinic setting several times a week.
For severe chronic plaque psoriasis, systemic tablets such as methotrexate, ciclosporin or acitretin may be used, along with newer biologic medicines that target specific parts of the immune system. In Australia, biologics for severe chronic plaque psoriasis are subsidised under the Pharmaceutical Benefits Scheme (PBS), but only when strict clinical criteria are met and treatment is overseen by a dermatologist. This is why a GP or dermatologist is the right starting point for anything beyond mild disease — the effective options are prescription-only and need proper monitoring.
There is no single best treatment, because the right approach depends on how severe your psoriasis is and where it appears. For mild plaque psoriasis, consistent heavy moisturising combined with a coal tar preparation and salicylic acid to lift scale is a sensible over-the-counter starting point. For moderate-to-severe psoriasis, prescription topicals, phototherapy, systemic tablets or biologics are far more effective and need a GP or dermatologist. Matching the treatment to the severity — rather than chasing one product — is what works.
Psoriasis is a chronic condition, so it is more realistic to think about controlling flares than clearing them quickly. Nothing over the counter clears psoriasis overnight. Applying a heavy moisturiser generously, softening scale with salicylic acid and calming small itchy patches with short-term mild hydrocortisone can settle a mild flare over days to weeks. If you want faster or more reliable control of a stubborn or widespread flare, see your GP, as prescription treatments act more strongly than anything on the pharmacy shelf.
Triggers vary from person to person, but psychological stress is one of the most commonly reported. Other frequent triggers include skin injury (cuts, scratches, sunburn), infections such as streptococcal throat infection, cold and dry weather, smoking, heavier alcohol use, and certain medicines including some beta-blockers, lithium and antimalarials. Keeping a flare diary can help you identify your own personal triggers so you can reduce them where possible.
Yes, for mild plaque psoriasis. Australian pharmacies stock heavy emollients, coal tar creams, ointments, bath additives and shampoos, salicylic acid preparations, and mild hydrocortisone 1% cream — all without a prescription. These can relieve and help control mild symptoms. However, stronger corticosteroids, vitamin D analogues, phototherapy, tablets and biologics are prescription-only, so anything beyond mild psoriasis needs your GP or a dermatologist.
No — there is currently no cure for psoriasis, and Healthdirect confirms it cannot be fully cured. It is a chronic immune-driven condition that tends to flare and settle over time. The good news is that with the right treatment matched to severity, psoriasis can usually be well managed and controlled, and many people achieve long periods of clearer skin. Be cautious of any product that promises to cure or permanently eliminate psoriasis.
The 'rule of 10' is a guide doctors use to flag psoriasis as potentially severe. It classes psoriasis as severe if the body surface area affected is greater than 10%, or the Psoriasis Area and Severity Index (PASI) score is above 10, or the Dermatology Life Quality Index (DLQI) is above 10. In plain terms, it is a shorthand for 'this is extensive or is significantly affecting quality of life' — a signal that stronger, doctor-supervised treatment should be considered.
This information is general in nature and isn’t a substitute for professional medical advice. Always read the label and follow the directions for use. Talk to your pharmacist or doctor about what’s right for you.

Compare eczema creams sold in Australia: daily moisturisers, over-the-counter hydrocortisone for flares and bath oils — plus how to choose the right one.
Hydrocortisone cream may help relieve itching and inflammation from mild eczema, bites and rashes. Compare Sigmacort, DermAid and generic options in Australia.

Compare medicated dandruff shampoo actives — ketoconazole, selenium sulfide, zinc pyrithione, coal tar and salicylic acid — and find what suits you.