Is a referral required to see a dermatologist

for acne,fair complexion,tanning,sunburn,marks,spots,hair issues n
other skin n hair problems u can refer to dis website
http://freebeautysamplez.blogspot.com/
it has got so many tips n free beauty samples
for curing acne and other skin problems

a referal from docter is required and they often recomend the best

It depends on your insurance. If you do not have insurance, than no, but you will have to pay out of pocket. If you do have insurance, than it just depends on what they require.

Sorry I've never heard of Canberra, but you might want to include the state in your answer as it may be possible that there are several Canberras.