However, these doses are not the usual dose that a woman is exposed to when dying her hair, so it's hard to determine what this data means for a pregnant woman. She also revealed that there have been limited human studies that suggest a link to childhood cancer in children born to mothers who used hair dye while pregnant.
Another way to think about it, is the net sales amount is the amount of money that the company actually made before cost of goods sold and expenses. Returns and discounts are immediately subtracted, which gives a clearer view of how much money the company actually brought in.
The difference between net sales and net income is the difference between the top line and bottom line. Net sales, or net revenue, is the money a company gets from doing business with its customers. Net income is profit -- what's left over after the company has accounted for all its revenue, expenses, gains, losses, taxes and other obligations. Net sales is the top line of the typical company's income statement. It's the total amount the company has brought in from sales, called gross revenue, minus the value of product returns and allowances.