Orange you glad these citrus-scented formulas are on sale?

TruSkin’s serums are a hit with a slew of stars — and in honor of National Vitamin C Day, the brand is slashing prices by up to 50% on Amazon.

If you’re looking to seize (or should we say, C-eize?) the day, the brand’s Vitamin C Super Serum+ ($30 $25) could be a great place to start.

The supercharged skincare staple — currently nearly 20% off — is formulated with a dynamic duo of retinol and vitamin C, plus soothing aloe vera and hyaluronic acid for extra hydration.

In addition to the power ingredient-packed product — which boasts over 8,500 five-star ratings on Amazon — the Hollywood-loved company is also famed for its original Vitamin C Facial Serum ($49 $21).

“It’s a miracle,” Kyle Richards once said of the serum in a spa day-themed Amazon livestream. 

“I mean, when you put this on your face, always the next day … you can automatically see a difference,” she added. “It’s an automatic refresh.”

Alexandra Daddario shouted out the same product in her Vogue “Beauty Secrets” breakdown, saying, “topical vitamin C is great.”

The serum will cost you far less than a stay at the White Lotus or a “RHOBH” diamond today, as it’s currently over 50% off in the larger size in honor of Vitamin C Day.

Khloé Kardashian even showcased the stuff on her Instagram Story, per People, while Kylie Cantrall is such a TruSkin fan ,she even partnered with the brand on a bundle.

Today’s discounts also include the Vitamin C Brightening Moisturizer ($19 $16) and Vitamin C Brightening Duo ($35 $32), which includes both the brand’s signature serum and the collection’s cleanser.