Affordable Vitamin C serum pairs well with retinol and azelaic acid in nighttime routines.

Effective nighttime vitamin C serum enhances retinol regimens but faces criticism over recent cost changes. Combines well with azelaic acid.

This review is from Amazon.com for product:

Paula's Choice BOOST C15 Super Booster, 15% Vitamin C with Vitamin E & Ferulic Acid, Skin Brightening Serum, 0.67 Ounce

Loved everything about this until the price went up. I used with my medicated retinol a and azelaic acid at night. I then use sun screen with hydraulic acid and peptides.

Vitamin Basics & Tips

Vitamin C (ascorbic acid) works synergistically with retinol and azelaic acid in skincare routines. As an antioxidant, it helps neutralize free radicals generated by retinol use while brightening skin tone. When combined with azelaic acid's antibacterial and anti-inflammatory properties, this trio addresses multiple concerns: acne, hyperpigmentation, and collagen production.

Morning application requires special attention – vitamin C enhances sunscreen efficacy by combating UV-induced oxidation. The mentioned combination with hyaluronic acid and peptides creates a hydration-boosting matrix, plumping skin while delivering antioxidant protection. Proper layering order matters: apply vitamin C after cleansing, followed by azelaic acid, then retinol (if tolerated), finishing with moisturizer.

Stability remains crucial for vitamin C effectiveness. Look for airless packaging and store in cool, dark environments. Some users report better tolerance when using vitamin C at night with retinol, as morning use may increase photosensitivity despite sunscreen use.

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Tags： vitamin c serum retinol routine azelaic acid skincare regimen antioxidant protection

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