Here are dog‑food brands available in Australia that produce hypoallergenic / sensitivity‑focused options (hydrolysed prescription diets, limited‑ingredient or single‑protein “sensitive” formulas). Short note: “hypoallergenic” is used differently by brands — veterinary hydrolysed diets are the standard for confirmed food allergies; many commercial lines labelled “sensitive” / “limited ingredient” aim to reduce triggers but are not the same as a prescription hydrolysed diet.

• Royal Canin — Veterinary Hypoallergenic (hydrolysed protein; veterinary‑exclusive prescription formula). (royalcanin.com)
• Hill’s Prescription Diet — z/d (hydrolysed diet for food sensitivities; prescription range). (hillspet.com.au)
• Purina (Pro Plan Veterinary Diets) — HA / hydrolysed formulas for food allergy management. (purina.com.au)
• Nutrience (SubZero / Nutrience Care) — limited‑ingredient / “sensitive / hypoallergenic” lines (e.g., Sensitive Skin & Stomach, Limited Ingredient recipes). (nutrience.com)
• Ivory Coat — Sensitive / Single‑protein grain‑free formulas marketed for skin & stomach sensitivities. (thepetstandard.com.au)
• Black Hawk — Grain‑free / Sensitive Skin & Gut formulas for dogs with sensitivities. (blackhawkpetcare.com)
• Advance (Mars Petcare Australia) — Sensitive Skin & Digestion / Dermcare lines formulated for skin/digestive sensitivity. (thepetstandard.com.au)
• Canidae (PURE) — Limited‑ingredient, grain‑free PURE formulas (sold in Australia through retailers) for sensitive dogs. (canidae.com)
• Wag & Love (Wag) — single‑sourced / novel‑protein recipes marketed as “naturally hypoallergenic” (single‑protein / grain‑free options). (wagandlove.com)

If you’d like, I can:

• narrow these to veterinary hydrolysed prescription diets only, or
• show local retail links/where to buy in your city, or
• suggest an elimination‑diet plan (general steps) you can discuss with your vet.