A healthy diet, drink lots of water, avoid greasy food, don't over-clean your face as its needs natural oils, use coconut oil once in a while as it does wonders!

You can try vouchercodes.co.uk if in the the UK, or there is a coupon available now for the USA site.

If it is for inside, an air conditioner is the best option, you can find good value portable air conditioners on ebay.