You don’t have to look far to realize there is a controversy surrounding the common group of skin care ingredients called “parabens.” Walk the aisles of your favorite drugstore and you will see “No Parabens” popping up on more and more labels; and just the other day a well-known Beauty Editor tweeted about a new product launch she was attending and commented, “I’m glad to see there are no parabens.”
But just when it was looking like the consensus is that parabens are bad and don't belong in skincare products, I read an article citing conflicting information.
Are parabens not as bad as originally thought?
It may help to start by explaining exactly what parabens are and why they are used in skin care.
If you’ve ever read the ingredients list on your bottle of lotion, cream or cleanser (and you should if you haven’t) there is a good chance the first ingredient is aqua, or water.
Water in the first position is a good thing because more than anything else, our skin requires hydration to stay healthy. But any water-based skin care formulation is prone to bacteria, mould and fungus growth, which can lead to skin infections.
To protect us against this problem, manufacturers add preservatives to their products during production.
But the business of preserving skin care is a complicated one. Different products may have different preservation requirements depending on such things as the composition of the formulation, the ratio of water to oil, or the pH level of the product.
In the case of parabens as preservatives, there are a number of different types, each one suited to a specific task. For example, before a lotion or cream is emulsified (mixed together, like salad dressing), propylparaben is added to the oil phase while methylparaben is added to the water phase. Once these two phases are combined, a third (and maybe fourth and fifth) type of paraben may also be added.
Not all parabens are created equal, and according to an increasing number of scientific studies, not all are equally safe.
Methylparaben, thought to be the most hazardous of all parabens, is the one to really watch out for. Research studies 1 have linked it to everything from mild skin irritation to neurological and respiratory toxicity. But the big issue with methylparaben is its proven ability to mimic estrogen when it is absorbed into the bloodstream. For women in general, elevated levels of estrogen cause all kinds of health concerns; but for pregnant women in particular, there is growing concern over the potential danger to their developing fetuses.
The imbalance of hormones invitro may be responsible for the increased incidence in undescended testicles in newborn males, and increasingly younger maturation of adolescent girls.
Ideally we should avoid parabens altogether, but with up to 90% of personal care products containing one type or another, managing our risk and avoiding the worst ones may be more realistic. 2
Parabens in “leave on” products, such as cosmetics, lotions, creams and serums pose the greater risk because of their potential to be absorbed through your skin into your bloodstream. In “wash off” products such as body wash, shampoos and conditioners, however, they are thought to be less risky.
Here, according to Environmental Working Group 3, are the most common parabens and how they are ranked in terms of toxicity.
- Methylparaben (and sodium methylparaben)
- Propylparaben (and sodium propylparaben)
Protect yourself from harmful ingredients. Choose organic products whenever possible and always read the ingredient list of any personal care item you buy.
2] Winter, R. (2009) A Consumer's Dictionary of Cosmetic Ingredients (2009). Random House.
3] Environmental Working Group (2010). Retrived from http://www.cosmeticsdatabase.com/