We've already discussed some professional treatments for hyperpigmentation, but an even complexion can't be created in a dermatologist's office alone.

The skin care ingredients you use at home play a major role in minimizing dark spots and preventing new ones from forming. So let's start with the leader of the skin-lightening pack: hydroquinone.

Like most of my colleagues, I consider hydroquinone an invaluable tool for treating dark spots. It decreases the activity of tyrosinase, an enzyme that stimulates melanin-production, by up to 90 percent - with dramatic results. Hydroquinone is available in both prescription and (in concentrations of 2 percent or less) over-the-counter products.

Sounds great, right? Well, hydroquinone is also one of the most controversial ingredients in the dermatological world these days, due to a decision pending before the FDA.

Their concern is that prolonged use of hydroquinone may lead to a skin condition called ochronosis, basically a more permanent form of hyperpigmentation. Ochronosis is common in Asia but very uncommon in the US.

In the 10 years I have used hydroquinone in my practice, I have only seen one case of ochronosis in a Chinese patient; moreover, despite widespread use of hydroquinone, only 30 cases of ochronosis have ever been reported in North America.

My sincere hope is that we'll keep hydroquinone in our skin care arsenal and take this opportunity to use it better: For example, always using it under a dermatologists' supervision, limiting use to four-month cycles (and never using hydroquinone in concentrations greater than 4 percent), maximizes its benefits while minimizing the risks.

The FDA's ruling on hydroquinone could come any day. (I'll be sure to keep you posted!) Until then, anyone who is using (or interested in trying) hydroquinone-based products should stock up now, or talk to your dermatologist ASAP.

So what if hydroquinone is pulled from the market, or you simply decide it's not for you? Join me next time to take a look at other skin care ingredients that can help you uncover a more even complexion.

Wishing you great skin!

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Dr. Baumann is author of the best-selling book, " The Skin Type Solution." To learn more about her revolutionary skin typing system, visit her Web site, SkinTypeSolutions.com. 

All of Dr. Baumann's recommended skin care products are available online, and a portion of proceeds goes to The Dermatology Foundation.

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