Americans spent more than $6 billion on natural beauty products last year alone. But there's also a downside to 'natural' beauty.

Doctors say organic and all-natural skincare products have their pluses, like eliminating artificial fragrances that can bother some people. But dermatologist Jill Nelson says they can also be harmful to some people.

"I certainly see a lot of patients with atopic dermatitis or eczema or very sensitive skin that actually get irritated by a natural product," Dr. Nelson says.

Dr. Nelson says common ingredients like fruit acids and nut oils increase the possibility you will have an allergic reaction to the product.

Another problem is shelf life. 'Purely Organic' and 'All Natural' products often have no preservatives in them. That can cut the product's shelf life in half and make it contaminate faster. That has some shoppers like Jackie Hansel balking at the higher price.

"I'm not sure they're really doing what they say they're going to do, especially at the kind of price they're sold at," Hansel complains.

So, if you want to go natural...doctors say be sure to read the label carefully first.

It's also a good idea to spot check. You should first test the product in an unaffected area like the crease of the arm to see if any irritation develops there.

'Organic Beauty' is also moving to clothing stores. New styles are constantly being developed to keep up with the growing demand for organic cotton clothing.