Celebrities. Not always so much like us. For example, when you’re Chrissy Teigen, you massage $340 face serum all over your pregnant belly in hopes of preventing stretch marks. (And that’s $340 for a miniature one ounce bottle, BTW).

In an Allure story yesterday, the usually charmingly relatable model shared that La Mer The Concentrate has been a key part of her strategy for avoiding what she’s previously referred to as “stretchies” (when posting a photo of her thigh stretch marks on Instagram—charmingly relatable). “I come from a stretch mark-prone family—I have them all over my butt and inner thighs,” she says in the story. “Luckily, I’m with a man who could not care less about them or else I would be insecure, but during my pregnancy, it was my belly I was scared of. I knew I’d have to do something about it before I started seeing them.”

So what are the rest of us to make of this tidbit? While we fully support indulging in this ultra-luxurious serum for your face if the finances allow, we wonder if there’d be enough stretch mark-preventing benefits to justify spreading it over a much larger surface area. Of course, Teigen has no worries in that department. Not only do celebrities get stocked with top-shelf products for free all the time, she happens to be a a La Mer spokesperson and likely has access to an unlimited flow of the brand’s highly lauded products. (As far as celebrity perks go, this honestly might trump personal chef in our book.) Plus, she has added motivation to mention its products. Just sayin’.

But regardless, now her stretch mark tip is circulating the internet, so we wanted to clarify whether you should even get it in your head that a fancy face serum could be your holy grail of stretchies prevention. So we polled a handful of our favorite no-b.s. dermatologists to hear what they’d tell you. Here are their responses to the question “Would Chrissy Teigen’s $340 serum really help us prevent stretch marks?

Dr. Ranella Hirsch:
“If only! Stretch marks are the product of breaks in elastic tissue deep in the skin, related to both heredity and changes in weight. Chrissy is gorgeous always, even more so as a glowing mama to be, but the reality for most women is that topical products, even diligently applied, won’t keep you from getting stretch marks.”

Dr. Heidi Waldorf:
“Unfortunately, it doesn’t matter if you apply a product that is 34 cents, $34, $340 or $3440 to a pregnant belly. There is nothing you can apply that will prevent stretch marks. Stretch marks develop in pregnancy from a combination of baby size, speed of growth of the belly, and mother’s genetics. The only evidence we have on topicals for stretch marks is on treatment of those that have already developed.”

Dr. Dendy Engelman:
“Stretch marks are a result of the body expanding faster than your skin is able to. They are, in a sense, scars caused by the tearing of the dermis. Due to genetics some people are more prone than others, but there’s one way you can help to prevent them, and that is moisture and hydration. During my pregnancy I used Bio-Oil all over my body. Studies show that usage helps prevent stretch marks and that it helps the appearance of scarring, for those who are seeing stretch marks. I also moisturized all over—the more pliable your skin is, the less chance there is that stretch marks will appear.”

Dr. Audrey Kunin:
“Treatments that encourage and support the production of collagen can help minimize the appearance of new stretch marks during pregnancy. High potency Vitamin C serums—15-20 percent—are my go-to suggestion for my patients.”

Dr. Howard Sobel:
“The price of the moisturizer—as long as you can afford it!—is really insignificant. It’s the efficacy of the ingredients that will make you see a difference in stretch marks. Ingredients such as vitamin A (retinol), vitamin C, niacinamide, peach leaf, raspberry fruit and rich antioxidants such as grapeseed or astaxanthin are sure to help retexturize and improve the look of stretch marks over time.”

Dr. Manjula S. Jegasothy:
“There’s some scientific evidence that any daily hydration can prevent stretch marks, so the La Mer serum would definitely fit this category.The only definitive study I’m aware of for stretch mark prevention involved prescription-strength Retin-A.”

As we suspected, smearing La Mer on one’s belly is best reserved for those who get it for free. The rest of us can get similar or better results with much less expensive products—and in the end, we’re probably at the mercy of genetics anyway. We’ll continue throwing money at the fine lines and discoloration on our faces, where topicals really can make a big difference.

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