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Martha Stewart uses this 'long-time favorite' vitamin C serum, and it's on sale

With hydrating collagen and sodium hyaluronate, the Mario Badescu formula helps fight fine lines and protect skin from external irritants.

Martha, Martha, Martha! Yes, 83-year-old entrepreneur, home expert and beauty maven Martha Stewart has had people talking for decades now, discussing everything from her Martha Stewart Living segments to her fun and fabulous friendship with the Doggfather himself, Snoop Dogg. One thing we've always noticed? Her seemingly ageless look and fresh, flawless skin. A brand she often credits for her healthy appearance is Mario Badescu — and one of her favorite products from the iconic facialist's line is the Mario Badescu Vitamin C Serum, an anti-aging dynamo that's on sale at Amazon for just $34.

This little wonder is packed with vitamin C, which can help slow visible signs of aging and protect skin from external irritants.

$34 at Amazon

Why is this a good deal? 💰

Most celeb-beloved beauty products — especially where skin care is concerned — can cost hundreds if not thousands of dollars. However, the Mario Badescu Vitamin C Serum will only set you back $34, a 25% savings from its original price of $45. That's the lowest price it's been marked down to since October Prime Day! Now that's gorgeous.

Why do I need this? 🤔

The star's facialist, Carmela Barabas, talked up the Mario Badescu formula with InStyle: "[The serum is a] long-time favorite of Martha Stewart. It’s a great anti-aging serum that helps to minimize the appearance of fine lines and improve the skin's texture." Barbaras added that routine use can help encourage "a more radiant complexion."

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Hardworking vitamin C is the main ingredient; it's known to improve overall skin texture and appearance with regular application. It does this by helping to protect the skin from harmful environmental factors such as UV rays and free radicals, reducing the appearance of dark spots, and even minimizing inflammation. That's not the only powerhouse in the formula, though — there's also collagen, which plays a role in replacing dead skin cells and lending more elasticity, and sodium hyaluronate, a form of hyaluronic acid, which penetrates deep into the skin to hydrate from within, reducing dryness and wrinkles in the process. All of this combines into one stellar serum that even A-listers trust to keep their faces looking fabulous.

Martha Stewart
Get your glow on, just like the Domestic Diva herself. (Getty Images)

What reviewers say 💬

The Queen of "Good Things" is in good company — more than 1,200 Amazon reviewers have given the vitamin C serum their five-star stamp of approval.

Pros 👍

"[I was] watching a Martha Stewart video where she looks so healthy and youthful, and she said she swears by a vitamin C serum daily. She mentioned this product, so I had to buy it... And I am in love with it," gushed a reviewer. The feel, the smell, the glow — I have only used it daily for two weeks, and honestly, my skin looks so dewy. I’ve gotten compliments on looking more rested and glowy."

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"I had developed some acne and scarring from wearing face masks," another shopper confessed. "This has helped clear up my skin and even it out. I’ve been using it for about 4 months now and only have very minimal scarring left... Definitely a good investment. It has a light fragrance and will help your skin look dewy without feeling oily."

One fan wrote, "I got this because of Martha Stewart. I've always thought she had beautiful, shiny skin. I read an article that she used this specifically, so I had to try it. Omg! It's amazing! After a week, I noticed that my skin was shinier. I still have wrinkles I'm not happy about. But this goes on every other night, so it is going to last. And I can feel a difference in my skin the next day. I love it! My forehead wrinkles look better. But my overall face looks better! My skin looks shinier and healthier!

Cons 👎

"I have been using this for a while now. I did notice that I can only use this about two times a week. Any more than that dries out my skin," noted a customer. "But I do see a difference. My skin tone is more even and bright. I’m keeping my original four-star review because the bottle cap doesn’t close very well and is not good for travel."

This reviewer echoed that sentiment: "They changed the packaging, and most importantly, the cap. When I received my new bottle I noticed that the cap would not close tightly, which made me worried. Just as I feared, when I put it in my drawer, the next day the ENTIRE bottle leaked and I lost all of the product."

Tons of fans have the celeb to thank for finding out about this gem: 'I saw this recommended by Martha Stewart and ordered it several years ago! I have been using it nightly since then. I can tell the difference in my skin,' said one satisfied user.

$34 at Amazon

If you have Amazon Prime, you’ll get free shipping, of course. Not yet a member? No problem. You can sign up for your free 30-day trial here. (And by the way, those without Prime still get free shipping on orders of $35 or more.)

The reviews quoted above reflect the most recent versions at the time of publication.