Here are commonly available cat-food brands that offer formulas specifically marketed to support healthy skin and a shiny coat (examples and what they focus on). I’ve included Australian product pages or official brand pages where possible.

Main brands and example formulas

• Royal Canin — Hair & Skin Care (retail) and Skin & Coat (veterinary dermatology diet). These contain EPA/DHA and omega‑6s and Royal Canin’s vet Skin & Coat is sold as a veterinary-exclusive dermatological diet. (royalcanin.com)
• Hill’s (Science Diet / Prescription Diet) — Science Diet “Sensitive Stomach & Skin” (and Hill’s prescription dermatology diets) list omega‑6s, vitamin E and other nutrients to nourish skin and coat. (hillspet.com.au)
• Purina Pro Plan — “Sensitive Skin & Stomach” and Pro Plan formulas that highlight added omega fatty acids to soothe skin and promote a lustrous coat. (purina.com.au)
• Purina ONE — Coat/Hairball and Sensitive formulas (marketed for healthy skin & shiny coat; include omega‑3/6 and vitamin E). (purina.com.au)
• Blue Buffalo — True Solutions / Skin & Coat formulas with omega‑3/6 (salmon/whitefish-based) targeted at skin & coat. (bluebuffalo.com)
• Wellness — CORE+ / Wellness CORE and Skin & Coat recipes that advertise omega‑3/6 and biotin for coat shine and skin health. (wellnesspetfood.com)
• IAMS — Proactive Health “Sensitive Digestion & Skin” formulas that include omega‑3/6 for coat and skin support. (iams.com)
• ORIJEN — high‑protein, fish/poultry‑rich recipes that list omega‑3 and omega‑6 as benefits for healthy skin & shiny coats (more a premium/natural nutrition approach). (apac.orijenpetfoods.com)
• Nutro — Wholesome Essentials / Natural Choice recipes (some salmon/salmon‑based options) that highlight omega fatty acids, zinc and B‑vitamins for skin & coat. (nutro.com)

Quick nutritional note (what to look for)

• Key nutrients linked with skin and coat health are omega‑3 fatty acids (EPA/DHA), omega‑6 fatty acids, vitamin E, zinc and biotin — many “skin & coat” formulas list these on the label. Veterinary sources discuss fish oil/omega‑3s as helpful for inflammatory skin problems and general coat improvements. For active dermatologic disease, veterinary diets (or supplements chosen by your vet) may be recommended. (petmd.com)

A few practical tips

• Read the label: look for explicit statements about omega‑3 (EPA/DHA) and omega‑6, plus zinc/biotin and high‑quality protein.
• Vet vs retail: some dermatology diets (e.g., Royal Canin Skin & Coat or Hill’s prescription options) are veterinary‑only and are used when skin disease needs medical management. (royalcanin.com)
• Expect time: many brands note visible coat/skin improvement in a few weeks but recommend feeding the diet for 6–8 weeks (or as advised) to assess results; persistent or severe skin problems should be seen by a veterinarian. (royalcanin.com)

If you’d like, I can:

• List brand/formula product links available in Australia (retail vs vet‑only), or
• Suggest specific recipes for a cat with hairballs, allergies, or sensitive stomach plus dull coat (if you tell me which issue is primary).