Dr. Althea Vitamin C Boosting Serum Dupes & Cheaper Alternatives
What Reddit recommends instead — 26 products with similar benefits · Analyzed 30 threads · Updated August 25, 2026
Cheaper options
Showing 6 of 23 · prices updated daily
For Hyperpigmentation
For Redness / Irritation
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The Ordinary
Retinol 1% in Squalane3 shared traits·65 mentions
Strong 1% retinol concentration with moisturizing squalane base

The Ordinary
Magnesium Ascorbyl Phosphate 10%3 shared traits·7 mentions
Gentle Vitamin C derivative tolerated by sensitive skin types

Geek & Gorgeous
C-Glow2 shared traits·63 mentions
Strong 15% L-ascorbic acid formula for effective antioxidant and brightening support

Naturium
Vitamin C Complex Serum2 shared traits·21 mentions
10% vitamin C plus 5% derivative avoids low pH formulas

The Inkey List
15% Vitamin C And EGF Serum2 shared traits·14 mentions
Includes EGF to enhance skin brightness and repair

The Ordinary
Multi-Peptide + Copper Peptides 1% Serum1 shared trait·70 mentions
Affordable copper peptide serum with moisturizing and collagen-boosting effects

1 shared trait·48 mentions
Plant-based mucin alternative for hydration and barrier support
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