Who is susceptible: Waldorf says this problem can be genetic or hormonal. "If you have significant facial hair in a male pattern area, it is important to have lab tests by your physician (your dermatologist, gynecologist or endocrinologist)," she says. "Some women with excessive facial hair have polycystic ovary syndrome which is treated by the endocrinologist."

How to treat it: "Beyond shaving, waxing and depilatories, which are all temporary ways to remove hair, the options for permanent hair removal are electrolysis or laser hair removal," Waldorf says. She adds that dark hair works best with laser removal, but it's important to find a doctor that knows what he or she is doing. Another option is prescription Vaniqa Cream, which can slow hair growth.

How to fix it at home: Trygstad says most of the time when we mess up our hair color it ends up too dark. To lighten it (or remove a color you're not happy with), shampoo your hair as soon as possible, using the hottest water you can stand and either a clarifying shampoo or dish soap. This will help strip the color.

When to visit a salon: If shampooing with dish soap a couple times doesn't work, head to a salon for color correction (even if you dyed it at home). Trygstad says that trying anything else (like re-dying it) without a professional can just cause more damage to your hair and create an even bigger emergency.

What they are: "Think of milia like a large whitehead or a little cyst," Waldorf says. They look like small white bumps on your skin.

How to treat them: Waldorf says that if you are predisposed to them, you should avoid comedogenic products (a.k.a. products that can clog your pores), like thick eye creams or lotions. To treat them, try topical retinoids, microdermabrasion or products with salicylic acid. If they really bother you, a dermatologist can extract them, but Waldorf warns against trying to do this yourself.

What it is: Basically, this is an allergy-induced rash. Poison ivy falls under this category, but allergies from cosmetics fall under this as well. Common triggers: neomycin in Neosporin and preservatives in makeup and fragrance.

How to treat it: "Treatment is with steroids -- topical if the reaction is mild, injectable and/or oral if it is severe (eyes swollen, etc.)," Waldorf says. To prevent future reactions, figure out what you are allergic to and avoid it. If you're having trouble, a dermatologist or allergist can help you get to the bottom of your reaction with contact patch testing.

What causes it: Dandruff is caused by a reaction to the fungus malassezia globosa (which is actually on everyone's scalp, but only about 50 percent of the population reacts to it). The reaction can cause redness, itching, flakes and oiliness.

How to treat it: Using a shampoo and conditioner with pyrithione zinc will fight the fungus and help with your symptoms. Trygstad says that when using a conditioner with these ingredients, it's important to get the product into the scalp for maximum benefit. Also, only use dandruff shampoo in conjunction with a conditioner that also contains pyrithione zinc or skip conditioner completely. Regular conditioner can strip away the active ingredient in dandruff shampoo. (One to try: Head & Shoulders Classic Clean 2 in 1 Shampoo and Conditioner, $11.90.)