Acne and Blackheads

Rub the acne area with a fresh garlic clove.
Drink at the very least 8 8oz glasses of water a day. Even more in the summer.
Mix one part of cinnamon into 3 parts of honey.Use as a scrub.
Dab a modest amount of toothpaste (paste, not gel) on pimples before bed; this helps dry out the pimples.
Pour a little salt into a modest bowl, add a straggling drops of water and mix till it turns into a paste. I've heard using a little toothpaste (paste, not gel) to this mix gives it a little supplemental kick. Use this recipe to exfoliate. Do not leave on overnight. Wash your face and rinse off.
Baking Soda as an exfoliate
Vitamin E gel tabs. Use as a facial moisturizer.
Honey and oatmeal as a facial scrub and exfoliate.
Dark Circles Around Eyes

Cucumber slice. Cover eyes with cucumber slices for 15 minutes.
Potato slice. Cover eyes with Potato slices. For 15 minutes.
Lead a healthier life style. Get plenty of sleep, water and Juice Plus wouldn't hurt.
Make a paste out of 1 tsp. tomato juice, 1/2 tsp. pineapple juice and 1 tsp. of flour. Apply around eyes. Leave on for 10 minutes before rinsing.
Moisturize with extraneous virgin olive oil or vitamin E.
Try used Chamomile tea bags (cool bags) over eyes for 15 minutes.
Energizer

Try eating an apple or 2
Mix 1 tomato, 1 orange, 1 clove of garlic. For greatest results, use a juicer.
Aloe Vera Juice. One of natures greatest detoxifiers.
Gum In Hair
There a straggling of these. Here they are:
Try using baby oil
Try peanut butter
Non stick cooking spray
Ice
A mixture of baking soda with water. Rub it in hair, brush it out.
Mosquito Bites

A paste of baking soda and water.
Aspirin capsule. Works well with bee stings. But for bee stings,try to remove the stinger.
Use calamine lotion.
Hangover
There seems to be a lot of these also but I could tell you what I used to do for a hangover. I am not suggesting you try it but it worked for me.
Elementary off, you wake up with a sour stomach and massive headache.
Alcohol dehydrates, so its time to replenish your body with water. Try a glass of water with one tablespoon of sugar. Water to rehydrate, sugar for the sour feeling in your gut. Sometimes I will take something for the headache. Aspirin or Advil whatever you desiderate.
Next, ice-bag for my head. I used to stick my head under cold running water in the laundry sink.
When your stomach is settled down a bit, and depending on how your feeling, time for breakfast.
Bad Breath

Try some parsley. This food garnish is rich in chlorophyll, a green plant compound that kills the bacteria that basis bad breath.
Use the juice of half a lemon, one teaspoon of salt. Gargle.
Brush your teeth with a couple pinches of baking soda. When done, brush again with normal toothpaste (optional).
I'm sure this is the tip of the iceberg, but these are the ones I know of. These home remedies are in no way a replacement to a Doctors care so if you feel that you might need to see a Physician, please do so.