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Oct 05, 2017
by Vivant Skin Care
We know this will come as a shock, but sometimes the internet serves up some bad information. Then multiplies it. And boom, a myth is created that will not die. Case in point, the theory that rubbing raw potatoes on your face will fade melasma, age spots, hyperpigmentation or acne scars. We’ve seen a slew of blogs, YouTube videos, and Pinterest posts from numerous sources (including some who should know better) promoting this completely unscientific claim.
We were curious as to how this potato power rumor got started. We couldn’t find blogger zero, but we did spot the common error in the posts. The potato proponents cite an enzyme called catecholase as the skin lightening agent.
The idea that catecholase lightens skin is 180 degrees from true. Catecholase is the result of the chemical compound catechol, and the enzyme polyphenol oxidase (both constituents of the potato) combining and reacting to oxygen. This reaction stimulates melanin production. Let’s say that again because this is the crux of why rubbing raw potato on your face to remove pigmentation is going to leave you disappointed and probably a bit itchy (catechol is known to cause eczematous dermatitis). Catecholase is an enzyme that stimulates melanin production.
Certainly, you’ve noticed that when you slice a raw potato and leave it on the counter, it will turn brown. Why? Because catecholase.
The idea that potatoes have beneficial effects for skin is not completely misguided. According to studies published in the National Center for Biotechnology Information, potatoes have been used for medicinal purposes for hundreds of years, including being applied topically in poultices for wound healing. And the reason they are good for topical wound healing is because they stimulate skin’s protective mechanism: melanin.
You’re far better off eating potatoes for their nutrient value. The skin is rich in nutrients—phenolic compounds, flavonoids, glycoalkaloids and cell wall polysaccharides—with antibiotic, anti-inflammatory and anti-fungal properties. The potato flesh contains a healthy dose of vitamin C, potassium, vitamin B6, fiber, magnesium, antioxidants and resistant starch.
For topical lightening agents, the science supports things like kojic acid, mandelic acid, hydroquinone, and niacinamide. Shop Vivant’s collection of products formulated to safely and effectively reveal a brighter, more consistent tone in all skin types.
Wow! Just Wow! Growing up with Irish parents we were taught to respect the spud. And by that I mean you EAT them, not use them as skin lighteners!
Now that I’m married to a Frenchman, he also has an incredible respect for the potato—as a frite! And in our house the only thing I do with raw potatoes is give them to our dog!
…Hmmmmmm. now perhaps I can use those old brown spuds to tan my legs??
Thank you fr the info!
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