Shop the Mad Hippie Vitamin C Serum on Amazon before Black Friday

Heads up: if you’ve been hunting for a reason to upgrade your morning skincare ritual, now might be the moment — because the fabulous “just-before Black Friday” news is that the viral and longtime cult-fave Mad Hippie Vitamin C Serum is currently 20% off.

And yes, I say this with full authority because after having the fragrance of multiple vitamin C serums (and I mean multiple, with a capital M) on rotation for years, this little bottle made the cut for one of the best.

Let me explain why I’ve been reaching for this one over and over, in the glow-chasing trenches, and why this sale is worth your radar. At its core, this serum doesn’t rely on the more aggressive L-ascorbic acid variant of vitamin C (which can be finicky, oxidize easily and irritate sensitive skin). Instead, it uses sodium ascorbyl phosphate — a more stable derivative of vitamin C that plays nice with skin and offers brightening and antioxidant benefits.

Layered into that are vitamin E (tocotrienol form) and ferulic acid — the classic dream team of antioxidants that bolster each other’s effects and help protect skin from environmental stressors.

Mad Hippie Vitamin C Serum

Amazon

As someone who’s tested vitamin C serums like they were going out of style, I can vouch for how important it is that the formula stays fresh (no oxidized brown-y mess) and works well with other products.

The texture is lightweight, sinks in easily, and (bonus!) doesn’t leave that sticky film some serums do. It’s gentle yet efficient, and stands out from most others for the lack of sting compared to harsher fast-acting formulas.

Beyond the headliners of vitamin C, E and ferulic acid, the formula also sports hyaluronic acid (hello hydration and plump), konjac root powder (a fun botanical that softens and has nutrients), chamomile extract (soothing for sensitive skin) and clary sage plus grapefruit extracts (a little toner/astringent vibe). The result is a serum that brightens, hydrates and calms.

What made me pick this serum over dozens of others? First: consistency. After trying high-priced tag serums, mid-range ones and budget ones, I settled on this because it day in, day out delivered visible improvement: skin tone looked more even, dull areas brightened up, and the texture of my complexion felt smoother.

Second: compatibility. Because it doesn’t lean wild and aggressive, I felt comfortable layering other actives and my SPF. And, third: value. At its usual price, it already delivered hefty perks, so a 20 % discount before Black Friday is a genuine steal in my book.

The bottom line

All in all, if you’ve been waiting for a reason — or an excuse — to treat yourself before the Black Friday madness, let this be it. With the 20% off, this Mad Hippie serum becomes one of those “Why didn’t I try this sooner?” buys. Before Black Friday, it should definitely be in your cart.

Why Trust Post Wanted by the New York Post

This article was written by Victoria McDonnell, New York Post Commerce Journalist & Content Strategist, who has spent countless hours researching, testing hundreds of products and comparing the latest makeup, skincare, hair and beauty items and trends to determine what’s truly worth your hard-earned cash. She evaluates formulas, textures, ingredients and more, in addition to consulting medical and industry experts. Some of Victoria’s latest conquests include testing the best vitamin C serums on the market, and a rinse-and-repeat review of the best shampoos of 2025. Victoria, who received a beauty industry essentials certification from the Fashion Institute of Technology, has been creating shopping guides for the New York Post since 2021 and previously held positions at Insider Reviews and CNN Underscored.