While there's certainly no shortage of products that claim to tackle dark spots and fine lines, you'd be hard-pressed to find one under $20, let alone $10. So when we noticed an army of nearly 6,700 Amazon shoppers singing the praises of one vitamin C-packed serum, we were intrigued — and the sticker price just sealed the deal. It's on sale for just $10, down from $20! We'll wait while you pick up your jaw off the floor.

Eclat Skincare

Eclat Skincare Vitamin C Serum

$12$20Save $8

This plant-based formula uses aloe vera juice, witch hazel, jojoba oil, hydrating hyaluronic acid and vitamin C to smooth and protect skin.

$12 at Amazon

The Eclat Skincare Organic Vitamin C Serum is made entirely of plant-based ingredients, like aloe vera juice, witch hazel, jojoba oil and hydrating hyaluronic acid. It's also loaded with good-for-your-skin vitamin C, which studies show can improve the appearance of wrinkles and protect your skin against UV damage.

The magic is in the concentration of vitamin C. Many other serums on the market contain 15 percent concentration, which isn't enough to make a difference, or upwards of 22 percent, which can be more irritating than beneficial. The Eclat Skincare formula sits pretty at 20 percent vitamin C, so it's effective without being overpowering, especially on sensitive or delicate skin.

If you're battling dark spots — whether caused by the sun, aging or acne — the serum can help lighten them. Writes one shopper: "This has significantly faded the stubborn dark spot on my forehead, so I'm thrilled about that," she shared. "I also love how this feels on my skin. It's very hydrating with a thick consistency, but it doesn't feel sticky. The ingredients list is great and you can't beat the price."

Others have noticed a smoother facial landscape altogether: "Since using this vitamin C serum I have definitely noticed that my fine lines have significantly reduced around my eyes and forehead," one shopper gleefully reported. "The roughness on my cheeks seems to be a lot better! I am in love with this product!"

Shoppers sensitive to smells rave about the serum as well, praising its fresh fragrance. 'First off, it smells amazing," one wrote. "Lovely light citrus scent. Not too greasy. My skin is already more even and the fine lines around my chin look better."

In short, shoppers are in love — and astonished. "Is this a joke? I used this once — ONCE —before bed...washed my face, applied this serum, and finally applied my normal moisturizer and retinol," says a five-star shopper. "I woke up absolutely glowing, to the point that people were complimenting me.... My skin is so soft and radiant, I’m terrified that people will catch on to this and it’ll run out of stock. How is it possible that a serum could do this? Mind blown."

Eclat Skincare

Eclat Skincare Vitamin C Serum

$12$20Save $8

This plant-based formula uses aloe vera juice, witch hazel, jojoba oil, hydrating hyaluronic acid and vitamin C to smooth and protect skin.

$12 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 $25 or more.)

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

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