Augustinus Bader The Vitamin C Serum Dupe: Save $335

The Dupe

Skip the $380 splurge on Augustinus Bader The Vitamin C Serum and reach for Mario Badescu Vitamin C Serum instead. $45 vs $380 — save $335

Both serums deliver potent vitamin C in stable, effective formulations that brighten skin and fade dark spots. Mario Badescu's version contains magnesium ascorbyl phosphate, a gentle yet powerful form of vitamin C that won't irritate sensitive skin — similar to Augustinus Bader's approach of using stabilized vitamin C derivatives. You'll get the same antioxidant protection and collagen-boosting benefits without the luxury price tag.

The main difference? Augustinus Bader includes their signature TFC8 complex (a blend of amino acids and vitamins), while Mario Badescu focuses purely on vitamin C delivery with hyaluronic acid for hydration. Both absorb quickly and layer beautifully under moisturizer and sunscreen.

For daily vitamin C benefits at a fraction of the cost, Mario Badescu delivers results that rival the high-end original. Your skin gets the glow-boosting effects, and your wallet stays happy.

See the full comparison to discover why this dupe earned our top recommendation for budget-conscious skincare lovers.